TWI646813B - Communication control device, communication control method and communication device - Google Patents

Abstract

Even in the presence of a transmitter and a receiver using the same or similar frequency bands, ideal wireless communication can be performed through the receiver.

Provided is a communication control device for controlling a wireless communication communication device according to a time division duplex (TDD) method, comprising: a selection unit, which is a sub frame of a radio frame having a plurality of sub frames The unit is used to indicate the link direction configuration of the link direction of the link direction, and the link direction configuration required for the wireless communication is selected; and the applicable part is configured to configure the selected link direction, which is applicable to the above Wireless communication. The above-mentioned plural candidate system includes at least one of the configuration of the link direction dedicated to the lower chain and the configuration of the link direction dedicated to the winding.

Description

Communication control device, communication control method and communication device

The disclosure relates to a communication control device, a communication control method, and a communication device.

In recent years, the wireless communication environment has been faced with the problem of depletion of frequency resources due to the increase in data traffic. Therefore, the mechanism required to open a frequency band that has been granted a license to a specific business but has not been utilized for secondary communication is being actively discussed. The mechanism required for such secondary communication is also called LSA (Licensed Shared Access). For example, CEPT (European Conference of Postal and Telecommunications Administrations) is a device (WSD: White Space Devices) that uses a so-called "TV blank space" that is not used for television broadcasting in the following non-patent document 1. Need technical requirements, make suggestions.

In general, the transmission power of a transmitter that uses the frequency band for secondary use is limited to not cause harmful interference to the primary system (Primary System). For example, the following Non-Patent Document 1 proposes to provide a body for proper control of the transmission power of the WSD. It is the geographic location database (GLDB: Geo-Location Database) for the coverage of the DTT (Digital Terrestrial Television) system of the primary system, the location of the DTT receiver, and the permissible interference level. Usually, the license for the frequency band is granted for each country (or region), so the GLDB is also equipped by countries (or regions).

The following non-patent document 3 proposes a developmental geolocation engine (AGLE: Advanced Geo) required to maximize the system capacity of the secondary system through more advanced calculations using information provided by the GLDB. -Location Engine), set by the state or a third organization. This policy of setting up AGLE has been decided to be adopted by the UK's frequency management body OfCom (Office of Communications) and the third organization's database provider.

Further, in the following Non-Patent Document 4, there is discussion about a coexistence technique between devices that use the frequency band for secondary use.

[Previous Technical Literature] [Non-patent literature]

[Non-Patent Document 1] ECC (Electronic Communications Committee), "TECHNICAL AND OPERATIONAL REQUIREMENTS FOR THE POSSIBLE OPERATION OF COGNITIVE RADIO SYSTEMS IN THE ‘WHITE SPACES' OF THE FREQUENCY BAND 470-790 MHz”, ECC REPORT 159, January 2011

[Non-Patent Document 2] ECC (Electronic Communications Committee), "Complementary Report to ECC Report 159; Further Definition of technical and operational requirements for the operation of white space devices in the band 470-790 MHz”, ECC REPORT 185, September 2012

[Non-Patent Document 3] Naotaka Sato (Sony Corporation), "TV WHITE SPACE AS PART OF THE FUTURE SPECTRUM LANDSCAPE FOR WIRELESS COMMUNICATIONS", ETSI Workshop on Reconfigurable Radio Systems, December 12 2012, Cannes (France)

[Non-Patent Document 4] Draft ETSI TS 102 946, Reconfigurable Radio Systems (RRS); System requirements for Operation in UHF TV Band White Spaces

However, the impact of wireless communication on the primary system on the wireless communication of the secondary system that utilizes the frequency bands required by the primary system has not been specifically considered. That is, the impact of the transmission power of the transmitter of the primary system on the receiver of the secondary system has not been specifically considered. Therefore, the transmission power of the primary system may have a large impact on the wireless communication of the secondary system. As a result, it may result in a decrease in throughput in the secondary system. Further, the same problem may occur not only in the secondary system of the TV blank space, but also in the case of a small-sized cellular network in which a part or the whole of the macro honeycomb network is overlapped in the mobile communication system, for example.

Therefore, even in the presence of a transmitter and a receiver using the same or similar frequency bands, it is highly desirable to provide a mechanism for optimal wireless communication through the receiver.

According to the disclosure, a communication control device can be provided, which is a communication control device for controlling wireless communication according to a time division duplex (TDD) method, which has a selection unit and is wireless with a plurality of sub-frames. In the sub-frame unit of the frame to indicate the chain direction configuration of the link direction, select the link direction configuration required for the wireless communication; and the applicable part, the selected link is selected. Direction configuration, suitable for wireless communication. The above-mentioned plural candidate system includes at least one of the configuration of the link direction dedicated to the lower chain and the configuration of the link direction dedicated to the winding.

Moreover, according to the disclosure, a communication control method for controlling a wireless communication communication method according to a time division duplex (TDD) method includes: a radio frame having a plurality of sub-frames Among the plurality of candidates in the sub-frame unit to indicate the direction of the link direction of the link direction, the step of configuring the link direction required for the wireless communication is selected; and the selected link direction is configured, Suitable for the steps of writing wireless communication. The above-mentioned plural candidate system includes at least one of the configuration of the link direction dedicated to the lower chain and the configuration of the link direction dedicated to the winding.

Moreover, according to the present disclosure, a communication control device can be provided, comprising: an identification unit that recognizes a frequency channel that is performed in accordance with a time-division duplex (TDD) wireless communication; and a determination unit that is When the line communication is performed in more than two frequency channels, the interference frequency channel transmitted according to the interference signal and the frequency channel of each frequency channel are respectively used for the respective frequency channels included in the two or more frequency channels. The information related to the distance in the frequency direction is determined by counting the multiple candidates in the chain direction of the link direction indicating the link direction in the subframe frame of the radio frame containing the plurality of sub-frames. The wireless communication in the channel is applicable and more than one candidate can be selected. The above-mentioned plural candidate system includes at least one of the configuration of the link direction dedicated to the lower chain and the configuration of the link direction dedicated to the winding.

Moreover, according to the disclosure, a communication device can be provided, which is a communication device for controlling wireless communication according to a time division duplex (TDD) method, which has an identification unit and is wireless with a plurality of sub-frames. The sub-frame unit of the frame indicates the configuration of the link direction of the link direction of the link direction, and the configuration of the link direction applicable to the wireless communication is recognized; and the communication control unit is identified according to the identified The link direction configuration is configured to control the wireless communication. The above-mentioned plural candidate system includes at least one of the configuration of the link direction dedicated to the lower chain and the configuration of the link direction dedicated to the winding.

As described above, according to the present disclosure, even in the presence of a transmitter and a receiver using the same or similar frequency bands, ideal wireless communication can be performed through the receiver.

10‧‧‧Delivery machine

20‧‧‧Main WSD

30‧‧‧ Deputy WSD

50‧‧‧GLDB (Geo-Location Database)

60‧‧‧ junction

100‧‧‧AGLE (Advanced Geo-Location Engine)

110‧‧‧Network Communication Department

120‧‧‧Memory Department

130‧‧‧Control Department

131‧‧‧Information Acquisition Department

132‧‧‧Channel Identification Department

133‧‧‧Optional Alternative Decision Department

135‧‧‧Channel Assignment Department

137‧‧‧Configuration Selection Department

139‧‧‧Configuration Department

200‧‧‧Main WSD (White Space Devices)

210‧‧‧Antenna Department

220‧‧‧Wireless Communications Department

230‧‧‧Network Communication Department

240‧‧‧Memory Department

250‧‧‧Control Department

251‧‧‧Information Acquisition Department

253‧‧‧Configuration Selection Department

255‧‧‧Configuration Department

257‧‧‧Communication Control Department

300‧‧‧WWS (White Space Devices)

310‧‧‧Antenna Department

320‧‧‧Wireless Communications Department

330‧‧‧Memory Department

340‧‧‧Control Department

341‧‧‧Information Acquisition Department

343‧‧‧Configuration Identification Department

345‧‧‧Communication Control Department

750‧‧‧Server

751‧‧‧ processor

752‧‧‧ memory

753‧‧‧ storage

754‧‧‧Internet interface

755‧‧‧Wired communication network

756‧‧ ‧ busbar

800‧‧‧eNB

810‧‧‧Antenna

820‧‧‧Base station installation

821‧‧‧ controller

822‧‧‧ memory

823‧‧‧Network interface

824‧‧‧ core network

825‧‧‧Wireless communication interface

826‧‧‧BB processor

827‧‧‧RF circuit

830‧‧‧eNodeB

840‧‧‧Antenna

850‧‧‧Base station installation

851‧‧ ‧ controller

852‧‧‧ memory

853‧‧‧Internet interface

854‧‧‧core network

855‧‧‧Wireless communication interface

856‧‧‧BB processor

857‧‧‧Connection interface

860‧‧‧RRH

861‧‧‧Connection interface

863‧‧‧Wireless communication interface

864‧‧‧RF circuit

900‧‧‧Smart Phone

901‧‧‧ processor

902‧‧‧ memory

903‧‧‧ storage

904‧‧‧ External connection interface

906‧‧‧ camera

907‧‧‧ sensor

908‧‧‧ microphone

909‧‧‧Input device

910‧‧‧ display device

911‧‧‧ Speaker

912‧‧‧Wireless communication interface

913‧‧‧BB processor

914‧‧‧RF circuit

915‧‧‧Antenna switch

916‧‧‧Antenna

917‧‧ ‧ busbar

918‧‧‧Battery

919‧‧‧Auxiliary controller

920‧‧‧Driving navigation device

921‧‧‧ processor

922‧‧‧ memory

924‧‧‧GPS module

925‧‧‧ sensor

926‧‧‧Information interface

927‧‧‧Content Player

928‧‧‧Memory Media Interface

929‧‧‧ input device

930‧‧‧ display device

931‧‧‧Speakers

933‧‧‧Wireless communication interface

934‧‧‧BB processor

935‧‧‧RF circuit

936‧‧1 more than one antenna switch

937‧‧1 more than 1 antenna

938‧‧‧Battery

940‧‧‧In-vehicle system

941‧‧‧Car network

942‧‧‧Vehicle side module

[Fig. 1] An explanatory diagram for explaining a specific example of the TDD configuration.

[Fig. 2] An explanatory diagram for explaining an example in which the transmission power of the primary system affects the upper system chain.

[Fig. 3] An explanatory diagram for explaining an example in which the transmission power of the primary system affects the lower chain of the secondary system.

FIG. 4 is an explanatory diagram for explaining an example of a comparison result between the SINR of the uplink of the WSD and the SINR of the downlink.

[Fig. 5] An explanatory diagram for explaining an example of interference from frequency channels of a primary system to frequency channels used in a secondary system.

[Fig. 6] An explanatory diagram for explaining a TDD configuration dedicated to the downlink.

[Fig. 7] An explanatory diagram for explaining the TDD configuration dedicated to the uplink.

Fig. 8 is an explanatory diagram showing an example of a schematic configuration of a communication system according to an embodiment of the present disclosure.

Fig. 9 is a block diagram showing an example of the configuration of AGLE according to the embodiment.

[Fig. 10] An explanatory diagram for explaining an example of available channels required for a secondary system.

[Fig. 11] An explanatory diagram for explaining an example of available channel related information to which information of a candidate candidate has been added.

Fig. 12 is a block diagram showing an example of a configuration of a main WBS according to an embodiment.

[Fig. 13] A region of an example of the configuration of the sub WSD according to the embodiment. Block diagram.

Fig. 14 is a flowchart showing an example of a schematic flow of communication control processing according to the embodiment.

Fig. 15 is a flowchart showing an example of a schematic flow of communication control processing according to a first modification of the embodiment.

Fig. 16 is a flowchart showing an example of a schematic flow of communication control processing according to a second modification of the embodiment.

Fig. 17 is an explanatory diagram for explaining an example of arrangement of each device mentioned in the third embodiment.

[Fig. 18A] Fig. 18A is a first flowchart showing an example of a schematic flow of communication control processing according to a third modification of the embodiment.

[Fig. 18B] Fig. 18B is a second flowchart showing an example of a schematic flow of communication control processing according to a third modification of the embodiment.

FIG. 19 is an explanatory diagram for explaining another example of the arrangement of the CRM.

FIG. 20 is an explanatory diagram for explaining still another example of the arrangement of the CRM.

Fig. 21 is a block diagram showing an example of a schematic configuration of a server to which the technique described in the present disclosure is applicable.

FIG. 22 is a block diagram showing a first example of a schematic configuration of an eNB to which the technology described in the present disclosure is applicable.

FIG. 23 is a block diagram showing a second example of a schematic configuration of an eNB to which the technology described in the present disclosure is applicable.

Fig. 24 is a block diagram showing an example of a schematic configuration of a smart phone to which the technology described in the present disclosure is applied.

[Fig. 25] Overview of a driving navigation device to which the technology described in the present disclosure can be applied A block diagram of an example is omitted.

Hereinafter, a preferred embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. In the present specification and the drawings, the components that have substantially the same functional configuration are denoted by the same reference numerals, and the description thereof will not be repeated.

In addition, the explanation is performed in the following order.

1. Introduction

1.1. About the trend of duplex mode

1.2. Technical issues

1.3. The new method described in this embodiment

2. The schematic configuration of the communication system described in this embodiment

3. Composition of each device

3.1. Composition of AGLE

3.2. Composition of the main WSD

3.3. Composition of the secondary WSD

4. Process flow

5. Modifications

5.1. First modification

5.2. Second modification

5.3. Third Modification

6. Application examples

6.1. Application examples of AGLE and GLDB

6.2. Application examples of the main WSD

6.3. Application examples of secondary WSD

7. Summary

<<1. Introduction>>

First, the trend of the duplex mode, the technical problem, and the new method described in the present embodiment will be described.

<1.1. About the trend of the duplex mode>

Regarding the duplex mode of the TV blank space, a Frequency Division Duplex (FDD) or a Time Division Duplex (TDD) may be employed. In the FDD, the frequency channel for the uplink and the frequency channel for the downlink are separately prepared, but in the TDD, the frequency channel can be flexibly distributed into the upper and lower chains.

Then, as a duplex method for the TV blank space, it is currently considered that the more flexible TDD is ideal. The first reason is that the primary system is which frequency channel to use, which will vary with the channel conditions of each location, so it is ideal for the elastic distribution of the upper and lower chains. The second reason is that the most powerful Super Wi-Fi (IEEE 802.11af, IEEE 802.22) and TDMA-based CSMA (Carrier Sense Multiple Access) or TDMA are the WSD radio access technology (RAT). (Time Division Multiple Access) The agreement for action is adopted. Also, recently, by TD-LTE (Time Division Long Term Evolution) The trend of secondary use of the frequency band is booming in Europe.

In addition, in TDD, the radio frame contains a plurality of sub-frames, and the link direction of the sub-frame unit (for example, the lower chain and the upper chain) is set. More specifically, the multiple candidates of the link direction configuration (ie, TDD configuration) of the link direction are prepared in advance in the subframe frame of the wireless frame. Then, any of the candidates for the plural candidates will be set. A specific example of the plural candidates of such a TDD configuration will be described below with reference to FIG.

Fig. 1 is an explanatory diagram for explaining a specific example of the TDD configuration. Referring to Fig. 1, seven TDD configurations (Configuration 0 to 6) defined in the technical specifications of 3GPP (3rd Generation Partnership Project) (TS 36.211 Table 4.2-2: Uplink-downlink Configuration) are illustrated. In the TDD configuration, each sub-frame is a sub-frame for the downlink, that is, a downlink frame, a sub-frame for the uplink, that is, an uplink frame, and a special sub-frame. . The special subframe is designed to take into account the propagation delay from the base station to the terminal device, so it is set when the downlink subframe and the uplink subframe are switched.

As shown in Figure 1, the ratio of the number of sub-frames required for the uplink to the number of sub-frames required for the downlink is different for each TDD configuration. For example, if the special sub-frame is considered to be the sub-frame required for the downlink, the ratio of the sub-frames (ie, the lower sub-frame and the special sub-frame) required for the downlink in the sub-frame is the largest. The TDD configuration is configured as Configuration 5. In this case, the ratio of the sub-frames required for the lower chain is 90%. On the other hand, the ratio of the sub-frames required for the winding in the whole sub-frame is the largest TDD configuration, which is Configuration 0. In this case, on The ratio of the sub-frames (ie, the uplink sub-frames) required for the chain is 60%.

<1.2. Technical issues>

In general, the transmission power of a transmitter that uses the frequency band for secondary use is limited to not cause harmful interference to the receiver of the primary system. However, the impact of the transmission power of the transmitter of the primary system on the receiver of the secondary system using the secondary frequency band has not been specifically considered. Therefore, the transmission power of the primary system may have a large impact on the secondary system. An example of the influence of the transmission power of the primary system on the secondary system will be described below with reference to FIGS. 2, 3, and 4.

Figure 2 is an explanatory diagram for explaining an example of the influence of the transmission power of the primary system on the upper system overhead chain. Referring to Fig. 2, the transmitter 10 as the broadcasting system of the primary system, and the main WSD 20 and the secondary WSD 30 of the secondary system are shown. As shown in Fig. 2, in order to transmit the electromagnetic waves farther, the transmitter 10 of the broadcast system is usually set at a very high position. Further, the main WSD 20 serving as the access point or the base station is also placed at a higher position than the sub WSD 30. In this case, there is a high possibility that the propagation path from the transmitter 10 to the main WSD 20 is a direct view propagation path. Moreover, the transmission power of the transmitter 10 can be very large. Therefore, the transmission power of the transmitter 10 may have a large influence on the main WSD 20. That is, the transmission signal of the transmitter 10 may cause great interference to the uplink signal received by the main WSD 20. As such, the transmission power of the primary system may have a large impact on the winding of the secondary system.

Figure 3 is an explanatory diagram for explaining an example of the influence of the transmission power of the primary system on the lower chain of the secondary system. Referring to Fig. 3, similarly to Fig. 2, the transmitter 10 of the broadcasting system of the primary system and the main WSD 20 and the sub WSD 30 of the secondary system are shown. As described above, the transmitter 10 of the broadcasting system is usually set at a very high position, and the main WSD 20 is also disposed at a position higher than the sub WSD 30. In this case, there is a high possibility that the propagation path from the transmitter 10 to the sub WSD 30 is not a direct view propagation path. Therefore, the influence of the transmission power of the transmitter 10 on the sub-WSD 30 is relatively small compared to the influence of the transmission power of the transmitter 10 on the main WSD 20. Thus, the provision of the transmission power of the primary system to the lower chain of the secondary system may be less than the impact of the transmission power of the primary system on the secondary system upper chain.

4 is an explanatory diagram for explaining an example of a comparison result between a SINR (Signal-to-Interference and Noise Power Ratio) of a WSD and a SINR of a downlink. Referring to Fig. 4, the winding characteristics of the case shown in Fig. 2 and the lower chain characteristics of the case shown in Fig. 3 are illustrated. More specifically, a Cumulative Distribution Function (CDF) of SINR for each of the upper and lower chains is illustrated. In this example, the values defined in the ECC REPORT 186 Annex 1 are used for the primary and secondary system operating parameters. As a result, as shown in FIG. 4, the SINR of the uplink is lower than the SINR of the downlink.

As mentioned above, under the premise that the devices of the primary system and the secondary system maintain a certain distance, there is no relevant master. What is the planar positional relationship between the WSD20 and the secondary WSD30, and the influence of the primary system on the secondary system is strongly presented in the upper WSD20 at a higher position. That is, the impact of the primary system on the secondary system is strongly present in the upper chain.

The impact of such a primary system on the secondary system may be particularly significant when TDD is used as the duplex mode. Hereinafter, a specific example will be described with reference to Fig. 5 .

Fig. 5 is an explanatory diagram for explaining an example of interference from frequency channels of the primary system to frequency channels used in the secondary system. Referring to FIG. 5, the frequency channel used in the wireless communication of the primary system, that is, the primary channel (Primary Channel), and the frequency channel used in the wireless communication of the secondary system, that is, three secondary channels are illustrated ( Secondary Channel). As shown in FIG. 5, due to out-of-band radiation from the primary channel, a larger interference may occur in a secondary channel (e.g., secondary channel #1) that is closer to the primary channel. That is, in a secondary channel closer to the primary channel (eg, secondary channel #1), the SINR of the uplink may be much lower than the SINR of the downlink. As a result, throughput in the secondary system may be reduced.

Therefore, in the present embodiment, even in the case where there are transmitters and receivers using the same or similar frequency bands, ideal wireless communication can be performed through the receiver. More specifically, for example, it is possible to perform ideal wireless communication through WSD.

<1.3. New method described in this embodiment> - Definition of new TDD configuration

As explained with reference to Figure 1, for example, 3 TDD configurations are defined in 3GPP. In the present embodiment, a new TDD configuration is specifically defined. Specifically, a TDD configuration dedicated to the downlink and/or a dedicated TDD configuration for the uplink is newly defined. Hereinafter, an example of a new TDD configuration will be described with reference to FIGS. 6 and 7.

Fig. 6 is an explanatory diagram for explaining the TDD configuration dedicated to the downlink. Referring to Figure 6, as a Configuration 7, a dedicated TDD configuration for the downlink is illustrated. As shown in FIG. 6 , in the dedicated TDD configuration of the downlink, any sub-frame is a sub-frame for the downlink (that is, a downlink sub-frame).

Fig. 7 is an explanatory diagram for explaining the TDD configuration dedicated to the winding. Referring to Fig. 7, as Configuration 8, the configuration specific to the chain 1 and case 2 is illustrated. Case 1 is the case where the last subframe of the previous radio frame is the case of the uplink subframe, and the case 2 is the case where the last subframe of the previous radio frame is the downlink subframe. In both cases 1 and 2, the remaining sub-frames (ie, sub-frames #1~#9) other than the initial sub-frame are the uplink sub-frames. Then, in Case 1, the initial subframe (ie, subframe #0) is also the uplink subframe. On the other hand, in Case 2, the uplink communication is not performed in part or all of the initial subframe. This is because, similarly to the special subframe, in the initial subframe, due to the propagation delay, the downlink signal may be received.

For example, as described above, the sub-frame dedicated to the downlink and the sub-frame dedicated to the uplink are prepared.

By preparing such a new TDD configuration, ideal wireless communication can be performed, for example, via a WSD transceiver.

For example, by preparing a dedicated TDD configuration for the downlink, even the primary channel used in the wireless communication of the primary system and the secondary channel used in the wireless communication of the secondary system are similar in the frequency direction. In this case, the influence of the primary channel on the secondary channel can still be made smaller. More specifically, as explained with reference to FIG. 5, in the case where the secondary channel is close to the primary channel in the frequency direction, the SINR of the uplink is particularly likely to decrease. Therefore, if the TDD configuration dedicated to the downlink is prepared, the TDD configuration dedicated to the downlink can be set as the TDD configuration required for wireless communication in such a secondary channel. As a result, even the secondary channel near the primary channel can suppress interference from the primary system. That is, even if the available channel near the primary channel can suppress the decrease in SINR. That is, the wireless communication can be performed through the WSD (sub-WSD) transceiver.

Also, for example, by preparing a dedicated TDD configuration for uplinking, even if the frequency bandwidth of the secondary channel far away from the primary channel in the frequency direction is narrower (or when the number of secondary channels is small) Underneath, the throughput of the uplink can still be improved. More specifically, as explained with reference to FIG. 5, in the case where the secondary channel is close to the primary channel in the frequency direction, the SINR of the uplink is particularly likely to decrease. In other words, if the secondary channel is farther away from the primary channel in the frequency direction, the SINR of the uplink is not reduced much. Therefore, if the TDD configuration dedicated to the uplink is prepared, the TDD configuration required for wireless communication in the secondary channel far away from the primary channel can be set. Up-chain dedicated TDD configuration. As a result, even if the frequency bandwidth of such a secondary channel is narrow (or the number of such secondary channels is small), most of the radio resources for uplinking can be secured. Therefore, the throughput of the uplink can be improved. That is to say, the wireless communication can be performed through the WSD (main WSD) receiver.

Furthermore, for example, both the dedicated TDD configuration for the downlink and the TDD configuration for the uplink can be prepared. In this case, even if TDD is used as the duplex wireless communication system, wireless communication can be performed in the same manner and/or in part of the frequency channel as in the case of using the FDD as the duplex mode. Therefore, for example, it is also possible to set a downlink-dedicated TDD configuration for wireless communication in a secondary channel close to the primary channel, and to set up the uplink for the wireless communication in the secondary channel far away from the primary channel. TDD configuration. As a result, interference from the primary channel can be suppressed, and the throughput of the uplink can be improved.

<<2. Outline Configuration of Communication System According to the Present Embodiment>>

Next, a schematic configuration of a communication system according to an embodiment of the present disclosure will be described with reference to FIG. 8. Fig. 8 is an explanatory diagram showing an example of a schematic configuration of the communication system 1 according to the embodiment. Referring to Fig. 1, a communication system 1 includes a GLDB (Geo-Location Database) 50, an AGLE (Advanced Geo-Location Engine) 100, a main WSD (White Space Device) 200, and a sub-WSD. In addition, this example is an example of a communication system for a TV blank space.

GLDB50 is responsible for managing frequency channels managed by the country. a controlled database of information. For example, the GLDB 50 provides and monitors information and protection rules regarding the primary system. As an example, the GLDB 50 provides information on a frequency channel (hereinafter referred to as "available channel") that can be utilized by a secondary system (hereinafter referred to as "available channel related information").

The AGLE100 is a secondary system management node operated by a frequency management entity or a third organization in the country. For example, AGLE100 uses the channel-related information provided by GLDB50 to correct it by using a more advanced protection algorithm. It can also add new information to the above-mentioned available channel-related information. In this example, although one AGLE 100 exists for the GLDB 50 system, a plurality of AGLE 100 may exist for the GLDB 50 system.

The main WSD200 is a device that uses secondary systems in the national domain. The frequency channel used by the main WSD 200 in wireless communication, the transmission power in the wireless communication, and the like can be determined by the GLDB 50 and/or the AGLE 100.

The secondary WSD300 is in wireless communication with the main WSD200.

In addition, the AGLE100 and the main WSD200 are communication control devices for controlling wireless communication in accordance with the time division duplex (TDD) mode. Then, for example, the wireless communication system is a wireless communication of a secondary system that utilizes the frequency channel required by the primary system for secondary utilization. For example, the AGLE 100 controls the wireless communication of the secondary system performed by each of the main WSDs 200. In addition, the main WSD 200 controls the wireless communication of the secondary system performed by the device.

<<3. Composition of each device>>

Next, an example of the configuration of the AGLE 100, the main WSD 200, and the sub WSD 300 according to the present embodiment will be described with reference to Figs. 9 to 13 .

<3.1. Composition of AGLE>>

An example of the configuration of the AGLE 100 according to the present embodiment will be described with reference to Figs. 9 to 11 . Fig. 9 is a block diagram showing an example of the configuration of the AGLE 100 according to the embodiment. Referring to Fig. 9, AGLE 100 includes network communication unit 110, storage unit 120, and control unit 130.

(Network Communication Department 110)

The network communication unit 110 communicates with other communication nodes. For example, the network communication unit 110 communicates with the GLDB 50 and the main WSD 200.

(memory unit 120)

The memory unit 120 is a program and data required to memorize the operation of the AGLE 100.

Further, for example, the recording unit 120 memorizes information related to the available channels of the secondary system (hereinafter referred to as "available channel related information"). For example, the available channel-related information includes: available time of each available channel, center frequency, bandwidth, maximum transmission power, transmission spectrum mask related information, restrictions on link direction, and the like.

Further, for example, the recording unit 120 stores various control information to be supplied to the GLDB 50 and the main WSD 200, and various control information supplied from the GLDB 50 and the main WSD 200, in addition to the above-described available channel related information.

(Control unit 130)

The control unit 130 provides various functions of the AGLE 100. The control unit 130 includes an information acquisition unit 131, a channel identification unit 132, a candidate candidate determination unit 133, a channel assignment unit 135, a configuration selection unit 137, and a configuration application unit 139.

(Information acquisition unit 131)

The information acquisition unit 131 obtains information related to the available channels of the secondary system (i.e., can use channel related information).

For example, the above-mentioned channel-related information may include: available time of each available channel, center frequency, bandwidth, maximum transmission power, transmission spectrum mask related information, and the like. Further, the available channel information may be information provided by the GLDB 50, or may be information corrected by the AGLE 100 (control unit 130) based on the information provided by the GLDB 50.

Further, for example, the information acquisition unit 131 acquires various kinds of information provided from the GLDB 50 and the main WSD 200 through the network communication unit 110, and stores them in the storage unit 120.

Further, for example, the information acquisition unit 131 is to provide The various control information of the GLDB 50 and the main WSD 200 is acquired from the storage unit 120, and the various information is supplied to the GLDB 50 and the main WSD 200 via the network communication unit 110.

(Channel Identification Unit 132)

The channel identification unit 132 recognizes the frequency channel to which the wireless communication controlled by the AGLE 100 (hereinafter referred to as "target wireless communication") is performed.

For example, the channel identification unit 132 identifies the available channels required by the secondary system based on the available channels that have been acquired. Hereinafter, a specific example will be described with reference to Fig. 10 .

Figure 10 is an explanatory diagram for explaining an example of available channels required for a secondary system. Referring to Fig. 10, the primary channel (i.e., the frequency channel used in the wireless communication of the primary system) and the three available channels #1 to 3 (i.e., the frequency channels available to the secondary system) are illustrated. Channel #1 can be utilized to utilize the channel closest to the primary channel among the channels, and channel #3 can be utilized to utilize the channel farthest from the primary channel among the channels. For example, the channel identification unit 132 thus recognizes three available channels.

(Option candidate determination unit 133)

For example, the object wireless communication is performed in more than two frequency channels. In this case, the candidate candidate determination unit 133 determines, for each of the frequency channels included in the frequency channel of the above two or more, in the complex candidates of the TDD configuration, in order to record the absence of each of the frequency channels. One or more candidates that can be selected for line communication (hereinafter referred to as "optional candidates"). Further, the candidate candidate determination unit 133 determines one of the above information based on the information on the interference frequency channel to which the interference signal is transmitted and the distance in the frequency direction of each frequency channel (hereinafter referred to as "distance related information"). The above optional candidates. For example, the above-mentioned interference frequency channel is a frequency channel used in other wireless communication systems different from the above-described secondary system. As an example, the interfering frequency channel is corresponding to the frequency channel (i.e., the primary channel) used in the primary system (or other primary system) of the secondary system.

For example, the wireless communication of the secondary system (ie, the target wireless communication) is performed in more than two available channels. In this case, the selectable candidate determination unit 133 determines one or more selectable candidates (TDD configuration) for each of the available channels included in the two or more available channels. Further, the candidate candidate determination unit 133 determines one or more selectable candidates based on the related information of the distance between the primary channel and the frequency direction of each available channel (that is, the distance related information). That is, for each available channel, the restriction on the link direction (TDD configuration) is determined based on the distance between the available channel and the primary channel.

Also, for example, the complex candidate system of the TDD configuration described above includes: a dedicated TDD configuration for the downlink and/or a dedicated TDD configuration for the uplink. That is, the complex candidates of the TDD configuration include Configuration 7 and/or Configuration 8 as shown in FIGS. 6 and 7. Further, for example, among the above-mentioned plural candidates, Configuration 0 to 6 as shown in FIG. 1 are included.

- More than one alternative candidate decision method --The first case

As a first example, the mind of one or more selectable candidate, based on a note if the note and channel frequency interference distance of each frequency channel is less than the distance D ₁ when compared to the TDD downlink dedicated configuration. In other words, the selectable candidate determination unit 133 determines that the downlink-dedicated TDD configuration is a selectable candidate if the distance between the interference frequency channel and the upper frequency channel is less than the first distance.

For example, select line candidate deciding unit 133 if the primary channel and each channel is available distance less than the distance D _1, then the downlink TDD specific configuration candidate decided to be selectable. As an example, if there are three available channels 1 to 3 as shown in FIG. 10, the selectable candidates for the available channel 1 are the TDD configuration dedicated to the downlink.

Thereby, among the available channels close to the primary channel (interference frequency channel), only the TDD configuration of the downlink subframe (the TDD configuration without the uplink subframe) is selected and applied. As a result, in the available channel, the uplink wireless communication system is not performed, and only the downlink wireless communication is performed. Therefore, interference in the available channel should be suppressed. That is, the decrease in the SINR in the available channel is suppressed.

--The second case

As a second example, one or more optional candidates are listed above, and if the distance between the interference frequency channel and each of the frequency channels is greater than the distance D ₂ , the uplink-specific TDD configuration is included.

For example, the candidate candidate determination unit 133 determines that the uplink-dedicated TDD configuration is one of the selectable candidates if the distance between the primary channel and each available channel is greater than the distance D ₂ . As an example, when there are three available channels 1 to 3 shown in FIG. 10, one or more selectable candidates for the available channel 3 include a TDD configuration dedicated to the uplink.

Thereby, among the available channels far away from the primary channel (interference frequency channel), only the TDD configuration of the uplink subframe becomes optional. Therefore, with the choice of such a TDD configuration, even if the bandwidth of the available channel (or the sum of the bandwidths of all available channels) is narrow, the throughput of the uplink in the secondary system can be improved. the amount.

--The third case

In the third example, if one or more of the candidate candidates are selected, if the distance between the frequency channel of the interference frequency and the frequency direction of each of the frequency channels is large, the TDD group having a large number of uplink subframes is included. state.

For example, the candidate candidate determination unit 133 determines that the TDD configuration in which the number of uplink subframes is large is determined as a candidate candidate if the distance between the primary channel and the frequency direction of each available channel is large. As an example, if there are three available channels 1 to 3 as shown in FIG. 10, the selectable candidate for the available channel 3 includes Configuration 8 (that is, a TDD configuration dedicated for uplink). On the other hand, the selectable candidate for available channel 1 and the selectable candidate for available channel 2 are not included. Configuration 8. Further, for example, the selectable candidates for the available channel 2 include Configuration 0 to 6. On the other hand, the selectable candidate for available channel 1 does not include Configuration 0~6, only Configuration 7. In this way, the farther the available channel is from the primary channel, the candidate system has a TDD configuration with a larger number of uplink subframes.

Thereby, the farther the available channel is from the primary channel (interference frequency channel), the larger the number of uplink subframes can be selected for the TDD configuration. On the other hand, the closer the available channel is to the primary channel (interference frequency channel), then only the smaller number of TDD configurations of the uplink subframe can be selected in order to be available for the channel. Therefore, with the choice of such a TDD configuration, interference in the available channels can be suppressed. That is, the decrease in the SINR in the available channel is suppressed.

As described above, the first to third examples of the determination method of one or more selectable candidates are described. For example, the information of the candidate candidates thus determined is added to the available channel related information. That is, the link direction restriction is added to the available channel related information. Hereinafter, an example of such channel-related information can be described with reference to FIG.

Fig. 11 is an explanatory diagram for explaining an example of available channel related information to which information of a candidate candidate has been added. Referring to Figure 11, the available channel related information is represented in the form of a list. For example, the channel-related information can be used to include the available time of the channel, the center frequency, the bandwidth, the maximum transmission power, and the transmission spectrum mask. Information, and the direction of the link. The limitation of the chain direction is the same as the candidate candidate. For example, in an available channel with a center frequency of f1, the restriction of the link direction is only the FDD winding. That is, the optional candidate for the available channel is only for the TDD configuration dedicated to the uplink. Further, in the available channels whose center frequency is f2, the chain direction is all recognized. That is, the optional candidates for the available channels are all TDD configurations. Moreover, in the available channel whose center frequency is fn, the restriction of the link direction is only the FDD downlink. That is, the optional candidate for the available channel is only the dedicated TDD configuration for the downlink. In this way, the available channel related information containing the optional candidates is generated.

- According to QoS decision

In addition, one or more optional candidates may be determined based on information related to the quality of service (QoS) required for the wireless communication (hereinafter referred to as "QoS related information"). . In other words, the candidate candidate determining unit 133 may determine one or more candidate candidates to be selected based on the distance related information and the QoS related information.

For example, the above QoS related information system includes: throughput, delay, or bandwidth. As an example, if the high throughput is not required, the candidate candidate determination unit 133 may determine that the configurations 0 to 6 are selectable candidates for the available channels close to the primary channel.

Thereby, in accordance with the required QoS in wireless communication, the TDD configuration can be selected under the sufficient constraints necessary for the wireless communication. Therefore, the frequency channel can be utilized more flexibly.

- Distance information

Further, as an example, the distance-related information (that is, the related information of the distance between the primary channel and the frequency direction of each available channel) is, for example, the center frequency of the primary channel and the frequency of the center frequency of each available channel. The distance of the direction. In this case, for example, the center frequency of the primary channel is included in the control information provided from the GLDB 50, and the center frequency of each available channel is included in the available channel related information.

As mentioned above, for each frequency channel, the selectable candidates for the TDD configuration are determined. Thereby, the throughput can be improved while suppressing the influence of interference.

(Channel Assignment Unit 135)

The channel assignment unit 135 assigns a frequency channel to the target wireless communication.

For example, the channel assignment unit 135 assigns one or more available channels to wireless communication in the secondary system.

- allocation of frequency channels far from the primary channel

Further, the target wireless communication system is performed in one or more frequency channels. Then, one or more frequency channels are included, and the frequency channel in the frequency direction away from the distance D ₄ or more is transmitted from the interference frequency channel to which the interference signal is transmitted.

Specifically, for example, wireless communication of the secondary system is performed in one or more available channels. Then, one or more available channel systems are included, and the available channels are separated from the distance D _{4 by} more than the distance D ₄ from the primary channel. That is, the channel assigning unit 135 allocates an available channel that is apart from the distance D ₄ or more in the frequency direction from the primary channel for the wireless communication of the secondary system.

By thus distributing, interference from the primary channel can be made smaller. Therefore, the throughput of the uplink in the secondary system can be improved.

- Assignment of frequency channels

Further, when there are plural main WSDs 200, the channel assigning unit 135 may assign the same available channels to the main WSDs 200, or may allocate available channels different from each other. As an example, the channel assigning unit 135 may allocate the available channels in consideration of the influence of the primary channel in consideration of the position of the main WSD 200 in consideration of the influence of the primary channel.

(Configuration Selection Unit 137)

The configuration selection unit 137 selects the TDD configuration required for the object wireless communication among the plurality of candidates of the TDD configuration.

For example, the configuration selection unit 137 selects the TDD configuration required for wireless communication (ie, object wireless communication) in the secondary system among the plurality of candidates of the TDD configuration.

For example, the above-mentioned plural candidate system includes at least one of a downlink dedicated TDD configuration and a winding dedicated TDD configuration.

Further, for example, the above-mentioned complex candidate system includes a downlink-dedicated TDD configuration. As described above, even if the available channel is in the vicinity of the primary channel, the interference from the primary system can be suppressed more. That is, even if the available channel near the primary channel can suppress the decrease in SINR.

Also, for example, the above-mentioned complex candidate system includes a TDD configuration dedicated to the uplink. As described above, even if the frequency bandwidth of the secondary channel far away from the primary channel is narrow (or the number of secondary channels is small), most of the wireless resources for uplinking can be secured. Therefore, the throughput of the uplink can be improved.

Then, for example, as described above, the above-mentioned plural candidate system includes both the downlink dedicated TDD configuration and the uplink dedicated TDD configuration. In this case, even if TDD is used as the duplex wireless communication system, wireless communication can be performed in the same manner and/or in part of the frequency channel as in the case of using the FDD as the duplex mode. As a result, interference from the primary channel can be suppressed, and the throughput of the uplink can be improved.

Moreover, as described above, for example, the chain-specific link direction configuration includes: not performing uplink communication in part or all of the first subframes of the plurality of subframes included in the radio frame. TDD configuration. This point is the same as Case 2 explained with reference to FIG. Thereby, even if the last subframe of the previous radio frame is the downlink subframe, the interference of the downlink signal in the current chain frame can be avoided.

- In the case of wireless communication of objects in more than 2 frequency channels

For example, when the target wireless communication is performed in two or more frequency channels, the configuration selection unit 137 selects each of the frequency channels included in the two or more frequency channels in the above-mentioned plural candidates. The TDD configuration required for wireless communication in each frequency channel is shown.

For example, when the wireless communication of the secondary system is performed in two or more available channels, the configuration selection unit 137 separates the available channels included in the two or more available channels. Select the TDD configuration.

--Selection method of TDD configuration ---From the choice of optional candidates

For example, the configuration selection unit 137 selects the TDD configuration required for the wireless communication in each frequency channel from among the one or more selectable candidates of the above-mentioned plural candidates.

For example, the configuration selection unit 137 selects one or more selectable candidates determined by the selectable candidate determination unit 133 for each of the available channels included in the two or more available channels. Select the TDD configuration.

---Select according to the distance from the primary channel ----The first case

As a first example, the two or more frequency channels that are performed by the target wireless communication include: a first frequency channel that is closer to the interference frequency channel to which the interference signal is transmitted, and a channel that is farther away from the interference frequency channel. 2 frequency channels. Then, the configuration selection unit 137 is the TDD configuration required for the wireless communication in the first frequency channel, and is the first TDD configuration in which the number of the downlink subframes is the first number. Further, the configuration selection unit 137 is a TDD configuration required for wireless communication in the second frequency channel, and is a second link direction in which the number of downlink frames is selected to be smaller than the second number of the first number. configuration.

Specifically, for example, two or more available channels in which wireless communication of the secondary system is performed include a first available channel that is closer to the primary channel and a second available channel that is farther away from the primary channel. Then, the configuration selection unit 137 is a TDD configuration required for wireless communication in the first available channel, and is the first TDD configuration in which the number of downlink frames is N ₁ . Further, the configuration selection unit 137 is a TDD configuration required for wireless communication in the second available channel, and is a second TDD group in which the number of downlink frames is N ₂ (N ₂ <N ₁ ). state. That is to say, for the available channels closer to the primary channel, the TDD configuration with a larger number of downlink frames is selected, and for the available channels farther away from the primary channel, the TDD configuration with a smaller number of downlink frames is selected. .

With this choice of TDD configuration, interference in the available channels can be suppressed. That is, the decrease in the SINR in the available channel is suppressed.

In addition, when the candidate candidate is determined as the "third example" of the "one or more alternative candidates" method described above, the selection of the TDD configuration can be performed by Selecting the TDD configuration among the selection candidates is automatically implemented.

----The second case

As a second example, the configuration selecting unit 137 is a TDD group required for wireless communication in each frequency channel if the interference frequency channel and the distance of the frequency direction of each frequency channel are smaller than the distance D ₃ . State, is to choose the dedicated TDD configuration for the downlink.

Specifically, for example, the configuration selection unit 137 is configured as a TDD configuration required for wireless communication in each available channel if the distance between the primary channel and each available channel is less than the distance D ₃ . Is to choose the dedicated TDD configuration for the downlink.

With this choice of TDD configuration, interference in the available channels close to the primary channel is suppressed. That is, the decrease in the SINR in the available channel is suppressed.

In addition, when the candidate candidate is determined as the "first example" of the "one or more alternative candidates" method described above, the selection of the TDD configuration can be performed by Selecting the TDD configuration among the selection candidates is automatically implemented.

- In the case of wireless communication of objects in one frequency channel

For example, when the target wireless communication is performed in one frequency channel, the configuration selection unit 137 selects the TDD configuration required for wireless communication in one frequency channel among the above-mentioned plural candidates.

For example, the configuration selection unit 137 selects one if the wireless communication of the secondary system is performed in one available channel. The TDD configuration required for wireless communication in the channel is available.

As an example, if the wireless communication of the secondary system requires both the uplink and the downlink, the configuration selection unit 137 is configured as the TDD configuration required for wireless communication in one available channel. Configuration 0~6.

- the case where the wireless communication of the specified type is performed

As described above, for example, the target wireless communication system is performed in one or more frequency channels, and the one or more frequency channels are included, and the distance from the interference frequency channel to which the interference signal is transmitted is longer than the distance D ₄ in the frequency direction. Frequency channel. Then, the configuration selection unit 137 is configured to set the number of uplink subframes to be larger than the fixed number of TDD configurations when the target wireless communication is a predetermined type of wireless communication, and to be a frequency channel that is farther than the distance D _{4 from the} above-mentioned interference frequency channel. Choose the required TDD configuration. For example, the wireless communication of the specified type is referred to as Machine to Machine communication.

For example, the wireless communication of the secondary system is performed in one or more available channels, and the one or more available channels are included, and the frequency channel is away from the frequency D ₄ or more in the frequency direction from the primary channel. Then, the configuration selection unit 137 is configured to: when the wireless communication of the secondary system is M2M communication, the number of uplink subframes is greater than the fixed number of TDD configurations, and is regarded as the frequency channel from the interference frequency channel farther than the distance D ₄ . Choose the required TDD configuration.

With this choice of TDD configuration, the flow rate in the upper chain is higher. In many wireless communications (such as M2M communication), interference from the primary channel can be made smaller, and the throughput of the uplink can be improved.

(Configuration Applicable Department 139)

The configuration application unit 139 applies the selected TDD configuration to the object wireless communication.

Specifically, for example, the configuration applicator 139 applies the selected TDD configuration to the wireless communication of the secondary system.

- In the case of wireless communication of objects in more than 2 frequency channels

For example, the object wireless communication is performed in more than two frequency channels. In this case, the configuration applicator 139 applies the TDD configuration selected for each of the frequency channels included in the two or more frequency channels to the wireless communication in each frequency channel.

Specifically, for example, wireless communication of the secondary system is performed in more than two available channels. In this case, the configuration applicator 139 applies the TDD configuration selected for each available channel included in the two or more available channels to the wireless communication in each available channel.

- Specific methods of application

For example, the configuration applicator 139 applies the selected TDD configuration to the subject wireless communication (eg, wireless communication of the secondary system) by setting the selected TDD configuration to the primary WSD 200.

Specifically, for example, the configuration applying unit 139 notifies the main WSD 200 via the network communication unit 110 that the channel connection information, the available channel allocation result, and the TDD configuration selection result can be utilized. Then, the main WSD 200 that has received such notification sets the TDD configuration that has been selected for the wireless communication in the available available channels. Thereafter, wireless communication is performed in accordance with the TDD configuration that has been selected.

<3.2. Composition of the main WSD>

Next, an example of the configuration of the main WSD 200 according to the present embodiment will be described with reference to Fig. 12 . Fig. 12 is a block diagram showing an example of the configuration of the main WSD 200 according to the embodiment. Referring to Fig. 12, main WSD 200 includes antenna unit 210, wireless communication unit 220, network communication unit 230, memory unit 240, and control unit 250.

(antenna portion 210)

The antenna unit 210 receives the wireless signal and outputs the received wireless signal to the wireless communication unit 220. Further, the antenna unit 210 transmits the transmission signal output from the wireless communication unit 220.

(Wireless communication unit 220)

The wireless communication unit 220 performs wireless communication with the sub WSD 300 when the sub WSD 300 is located within the communication range of the main WSD 200.

(Network Communication Department 230)

The network communication unit 230 communicates with other communication nodes. For example, the network communication unit 230 communicates with the AGLE 100.

(memory unit 240)

The memory unit 240 is a program and data required for the operation of the main WSD 200.

Further, for example, the recording unit 240 memorizes the channel selection information, the allocation result of the available channels, and the selection result of the TDD configuration.

Further, for example, the memory unit 240 memorizes various control information supplied from the AGLE 100 in addition to the above information. Further, the storage unit 240 memorizes various control information to be supplied to the AGLE 100.

(Control unit 250)

The control unit 250 provides various functions of the main WSD 200. The control unit 250 includes an information acquisition unit 251, a configuration selection unit 253, a configuration application unit 255, and a communication control unit 257.

(Information acquisition unit 251)

The information acquisition unit 251 acquires information necessary for the target wireless communication.

For example, the information acquisition unit 251 obtains available channel related information and available frequencies from the AGLE 100 via the network communication unit 230. The result of the distribution of the road, and the selection result of the TDD configuration. Then, the information acquisition unit 251 stores the information in the storage unit 240.

Further, for example, the information acquisition unit 251 acquires and stores various other pieces of information supplied from the AGLE 100 through the network communication unit 230, and stores them in the storage unit 240.

Further, for example, the information acquisition unit 251 acquires various control information to be supplied to the AGLE 100 from the storage unit 240, and supplies the various pieces of information to the AGLE 100 via the network communication unit 230.

(Configuration Selection Section 253)

The configuration selection unit 253 selects the TDD configuration required for the object wireless communication among the plurality of candidates of the TDD configuration.

For example, the configuration selection unit 253 selects the TDD configuration required for wireless communication (ie, object wireless communication) in the secondary system among the plurality of candidates of the TDD configuration.

Further, for example, when the target wireless communication is performed in two or more frequency channels, the configuration selection unit 253 separates each of the frequency channels included in the two or more frequency channels. Select the TDD configuration required for the wireless communication in each frequency channel.

For example, when the wireless communication of the secondary system is performed in two or more available channels, the configuration selection unit 253 separates the available channels included in the two or more available channels. Select the TDD configuration.

- Specific choices

For example, the configuration selection section 253 selects the TDD configuration based on the selection result of the TDD configuration provided from the AGLE 100.

(Configuration Applicable Department 255)

The configuration applicator 255 applies the selected TDD configuration to the object wireless communication.

Specifically, for example, the configuration applicator 255 applies the selected TDD configuration to the wireless communication of the secondary system.

- In the case of wireless communication of objects in more than 2 frequency channels

For example, the object wireless communication is performed in more than two frequency channels. In this case, the configuration applicator 255 applies the TDD configuration selected for each of the frequency channels included in the two or more frequency channels to the wireless communication in each frequency channel.

Specifically, for example, wireless communication of the secondary system is performed in more than two available channels. In this case, the configuration applicator 255 applies the TDD configuration selected for each of the available channels included in the two or more available channels to the wireless communication in each of the available channels.

- Specific methods of application

For example, the configuration applicator 255 is by using the TDD group that has been selected. State, set in the main WSD200 to apply the TDD configuration that has been selected to the object wireless communication (for example, wireless communication of the secondary system). Further, the configuration application unit 255 transmits the set TDD configuration to the sub WSD 300 via the wireless communication unit 220.

(Communication Control Unit 257)

The communication control unit 257 controls wireless communication in accordance with the time division duplex (TDD) method. For example, the wireless communication system is a wireless communication of a secondary system that utilizes the frequency channels required by the primary system for secondary utilization.

Specifically, for example, the communication control unit 257 controls the wireless communication of the secondary system according to the TDD method in accordance with the TDD configuration that has been set. That is, the communication control unit 257 causes the wireless communication unit 220 to transmit the downlink signal in the downlink subframe, and send the uplink signal in the uplink subframe.

<3.3. Composition of secondary WSD>

Next, an example of the configuration of the sub WSD 300 according to the present embodiment will be described with reference to Fig. 13 . Fig. 13 is a block diagram showing an example of the configuration of the sub WSD 300 according to the embodiment. Referring to Fig. 13, the sub WSD 300 includes an antenna unit 310, a wireless communication unit 320, a storage unit 330, and a control unit 340.

(antenna portion 310)

The antenna unit 310 receives the wireless signal and receives the received wireless signal. The number is output to the wireless communication unit 320. Further, the antenna unit 310 transmits the transmission signal output from the wireless communication unit 320.

(Wireless communication unit 320)

The wireless communication unit 320 performs wireless communication with the main WSD 200 when the sub WSD 300 is located within the communication range of the main WSD 200.

(memory unit 330)

The memory unit 330 is a program and data required to memorize the operation of the sub-WSD 300.

Further, for example, the memory unit 330 memorizes the TDD configuration set by the main WSD 200.

Further, for example, the storage unit 330 stores the information provided from the main WSD 200 in addition to the above information. Further, the storage unit 330 stores various control information to be supplied to the main WSD 200.

(Control unit 340)

The control unit 340 provides various functions of the sub WSD 300. The control unit 340 includes an information acquisition unit 341, a configuration identification unit 343, and a communication control unit 345.

(Information acquisition unit 341)

The information acquisition unit 341 acquires information necessary for the target wireless communication.

For example, the information acquisition unit 341 acquires the set TDD configuration from the main WSD 200 via the wireless communication unit 320. Then, the information acquisition unit 34 stores the set TDD configuration set in the memory unit 330.

Further, for example, the information acquisition unit 341 acquires other various information provided from the main WSD 200 through the wireless communication unit 320, and stores it in the storage unit 330.

Further, for example, the information acquisition unit 341 acquires various control information to be supplied to the main WSD 200 from the storage unit 330, and supplies the various pieces of information to the main WSD 200 via the wireless communication unit 320.

(Configuration Identification Unit 343)

The configuration identification unit 343 identifies the TDD configuration that is applicable to the object wireless communication among the complex candidates of the TDD configuration.

For example, as described above, the information acquisition unit 341 acquires the set TDD configuration from the main WSD 200. In this way, the configuration identification unit 343 recognizes the set TDD configuration that is set.

(Communication Control Unit 345)

The communication control unit 345 controls wireless communication in accordance with a time division duplex (TDD) method. For example, the wireless communication system is a wireless communication of a secondary system that utilizes the frequency channels required by the primary system for secondary utilization.

Specifically, for example, the communication control unit 345 controls the secondary system according to the TDD mode according to the TDD configuration that has been set. Wireless communication. That is, the communication control unit 345 causes the wireless communication unit 320 to send a downlink signal in the downlink subframe, and send the uplink signal in the uplink subframe.

<<4. Process of processing>>

Next, an example of communication control processing according to the present embodiment will be described with reference to Fig. 14 . Fig. 14 is a flowchart showing an example of a schematic flow of communication control processing according to the embodiment.

First, GLDB 50 and AGLE 100 exchange information periodically or in accordance with the determined trigger (step S401). The information exchanged here includes, for example, synchronization information (NTP information, GPS (Global Positioning System), and IEEE 1588 (a protocol required to synchronize the clocks of base stations dispersed on the network), time adjustment information, etc.) , ID information, management domain information (country, region, latitude, longitude, altitude, etc.), security information (security key required for mutual authentication, etc.), information update cycle information, backup related information, primary system delivery Machine information (antenna height, position (latitude, longitude), transmission spectrum mask information, use of frequency related information (center frequency, bandwidth), antenna gain, antenna directivity, etc.).

Further, the AGLE 100 and the main WSD 200 exchange information periodically or in accordance with the predetermined trigger (step S403). The information exchanged here includes, for example, synchronization information, ID information, management domain information, security information, information update cycle information, backup related information, receiver information of the main WSD200 and the secondary WSD300 (the height of the antenna, Location (latitude, longitude), transmission spectrum mask information, use frequency related information (medium Heart frequency, bandwidth), antenna gain, antenna directivity, etc.).

Further, AGLE 100 determines information related to the available channels of the secondary system (i.e., can utilize channel related information) (step S405). The available channel-related information includes: available time of each channel, center frequency, bandwidth, maximum transmission power, and transmission spectrum mask related information. Further, the AGLE 100 (selectable candidate determining unit 133) determines one or more selectable candidates (TDD configuration) among the plurality of candidates for the TDD configuration for each available channel. The one or more selectable candidates are determined based on the related information of the distance between the primary channel and the frequency direction of each available channel (ie, distance related information). Then, the information of one or more selectable candidates thus determined is added to the above-mentioned available channel related information.

Then, the AGLE 100 (channel assignment unit 135) assigns one or more available channels to the wireless communication of the secondary system (step S407).

Further, the AGLE 100 (configuration selection unit 137) selects the TDD configuration required for the wireless communication in the individually available channel among the plurality of candidates for the TDD configuration for each available channel that has been allocated ( Step S409). Specifically, AGLE100 selects the TDD configuration required for wireless communication in the individual available channels from among more than one selectable candidate (TDD configuration) for each available channel that has been allocated. .

Then, AGLE 100 (Configuration Applicator 139), to the main WSD 200, notifies the selection result of the TDD configuration (step S411). also, The AGLE100 also informs the main WSD 200 of the available channel-related information and the available channel allocation results.

Thereafter, the main WSD 200 (Configuration Applicator 255) sets the TDD configuration selected for each available channel in the main WSD 200 (S413).

Then, the main WSD 200 (communication control unit 257) starts wireless communication of the secondary system according to the TDD method in accordance with the TDD configuration that has been set (S415).

<<5. Modifications>>

Next, the first to fourth modifications of the embodiment will be described.

<5.1. First Modification>

In the example of the above-described embodiment, the AGLE 100 selects the candidate candidates, the available channel assignments, and the TDD configuration. On the other hand, in the first modification of the embodiment, the selection of the candidate candidates, the allocation of the available channels, and the selection of the TDD configuration are performed by the GLDB 50. In other words, in the first modification, the function of the selectable candidate determining unit 133, the channel assigning unit 135, and the configuration selecting unit 137 among the AGLEs 100 is provided in the GLDB 50 instead of the AGLE 100. Hereinafter, an example of the communication control processing described in the first modification will be described with reference to Fig. 15 .

Fig. 15 is a flowchart showing an example of a schematic flow of communication control processing according to a first modification of the embodiment. In addition, step S501, S503, S513, S515, and S517 are the same as steps S401, S403, S411, S413, and S415 of the communication control processing described with reference to FIG. Therefore, only steps S505, S507, S509, and S511 will be described here.

The GLDB 50 determines information related to the available channels of the secondary system (i.e., can utilize channel related information) (step S505). The available channel-related information includes: available time of each channel, center frequency, bandwidth, maximum transmission power, and transmission spectrum mask related information. Further, the GLDB 50 determines one or more selectable candidates (TDD configuration) among the plurality of candidates for the TDD configuration for each available channel. The one or more selectable candidates are determined based on the related information of the distance between the primary channel and the frequency direction of each available channel (ie, distance related information). Then, the information of one or more selectable candidates thus determined is added to the above-mentioned available channel related information.

Then, the GLDB 50 assigns one or more available channels to the wireless communication of the secondary system (step S507).

Further, the GLDB 50 selects the TDD configuration required for the wireless communication in the individually available channel among the plurality of candidates for the TDD configuration for each available channel that has been allocated (step S509).

Then, the GLDB 50 notifies the AGLE 100 of the selection result of the TDD configuration (step S511). Further, the GLDB 50 notifies the AGLE 100 of the available channel connection information and the distribution result of the available channels.

As described above, according to the first modification, the selection of the candidate, the allocation of the available channels, and the selection of the TDD configuration can be selected. It is carried out by GLDB50. In addition, some of the options for the selection of candidate candidates, the allocation of available channels, and the selection of the TDD configuration are performed by the GLDB 50, and the rest are performed by the AGLE 100.

<5.2. Second Modification>

In the example of the above embodiment, the AGLE 100 is selected for TDD configuration. On the other hand, in the second modification of the embodiment, the selection of the TDD configuration is performed by the macro WSD 200. That is, in the second modification, the function of the configuration selection unit 137 in the AGLE 100 is not provided in the AGLE 100 but in the main WSD 200. Hereinafter, an example of the communication control processing described in the second modification will be described with reference to Fig. 16 .

Fig. 16 is a flowchart showing an example of a schematic flow of communication control processing according to a second modification of the embodiment. Further, steps S601 to S607, S613, and S615 are the same as steps S401 to S407, S413, and S415 of the communication control processing described with reference to FIG. Therefore, only steps S609 and S611 will be described here.

The AGLE 100 notifies the main WSD 200 of the available channel connection information and the allocation result of the available channels (step S609).

Thereafter, the main WSD 200 selects the TDD configuration required for the wireless communication in the individually available channel among the plurality of candidates for the TDD configuration for each available channel that has been allocated (step S611).

As described above, according to the second modification, the TDD group The choice of state is carried out by the macro WSD200. Further, in this case, it is even possible to select the candidate candidate and/or the allocation of the available channels, which is performed by the GLDB 50.

<5.3. Third Modification>

In the example of the present embodiment described above, a method of suppressing or avoiding interference with the secondary system by the primary system under the management of one GLDB 50 in one country has been described. However, in the case of a secondary system located near the border (for example, the main WSD 200), the secondary system may be affected by the primary system from other countries. That is, in a country's secondary system, interference from the primary system from other countries may occur.

Therefore, in the third modification of the present embodiment, it is not only the primary system under the management of one GLDB 50 in one country, but also the primary system under the management of the GLDB 50 in another country. That is, a means of suppressing or avoiding interference from the primary system under the management of the GLDB 50 corresponding to another country to the secondary system is provided.

- Example of arrangement of each device described in the third modification

First, an arrangement example of each device mentioned in the third embodiment will be described with reference to Fig. 17 . Fig. 17 is an explanatory diagram for explaining an example of the arrangement of each device mentioned in the third embodiment. Referring to Figure 17, a boundary 60 between country A and country B is illustrated. The 60th line may not necessarily be in line with the national border, and may be flexibly set from the viewpoint of band management. Moreover, the third modification is not limited to the boundary of the country, and can be widely applied to the community, Control of secondary use at the junction of states or counties.

GLDB50A is a regulatory database for managing data on frequency channels managed by country A. In addition, AGLE100A is a secondary system management node operated by a frequency management entity or a third organization in country A. On the other hand, GLDB50B is a regulatory database for managing information on frequency channels managed by Country B. In addition, AGLE50B is a secondary system management node operated by a frequency management entity or a third organization in Country B.

The main WSD200A is a device that uses a secondary system near the junction 60 in the field of country A. The main WSD200B is a device that uses a secondary system near the junction 60 in the field of country B. The main WSD200A in country A is not only affected by the primary system from country A, but also by the primary system from country B. Similarly, the main WSD200B in Country B is not only affected by the primary system from Country B, but may also be affected by the primary system from Country A.

Therefore, in the third embodiment, CRM (Coordinated Resource Management) is provided as a control entity required to suppress or avoid such influence (i.e., interference). The CRM system verifies whether a sub-system in a country is likely to be affected by the primary system of another country and adjusts the available channels as needed. In the example shown in Figure 17, the CRM system is implemented as part of the AGLE 100.

- Process flow

Next, an example of communication control processing according to a third modification of the embodiment will be described with reference to FIG. 18A and FIG. 18B. 18A and 18B are A program diagram of an example of a schematic flow of communication control processing according to a third modification of the embodiment.

First, the GLDB 50A and the AGLE 100A exchange information periodically or in accordance with the determined trigger (step S701). Similarly, GLDB50B and AGLE100B exchange information either periodically or in accordance with a given trigger. The information exchanged here is the same as the description of step S401 shown in FIG.

Further, the AGLE 100A and the main WSD 200A exchange information periodically or in accordance with the predetermined trigger (step S703). Similarly, the AGLE100B and the main WSD200B exchange information on a periodic basis or in accordance with a given trigger. The information exchanged here is the same as the related description of step S403 shown in FIG.

Further, the AGLE 100A determines information related to the available channels of the secondary system in the country A (that is, the channel related information can also be utilized) (step S705). Similarly, the AGLE100B also determines information about the available channels of the secondary systems in Country B (ie, channel-related information is also available). The determined available channel related information contains information of more than one optional candidate (TDD configuration).

In particular, in the third modification, the AGLE 100A and the AGLE 100B exchange information (step S707). The information exchanged here contains part or all of the information exchanged in steps S701 and S703.

Then, each of AGLE100A and AGLE100B checks whether there is a primary system that does not know whether it exists in the country's primary system and that will affect the sub-system of the country. Then, if there is such a The primary system exists, and the AGLE100 is the first to calculate the impact of the primary system on the secondary system (eg, interference level). If the influence is more than the positional accuracy, the AGLE 100 corrects and re-determines the available channel information (step S709). The corrections to the available channel information may be, for example, a change in the selectable candidate for the TDD configuration, or a reduction in the bandwidth of the affected available channel, or a deletion of the available channel.

Thereafter, the AGLE 100A and the AGLE 100B exchange information again (step S711). The information exchanged here contains, for example, available channel related information that has been re-determined. Then, AGLE100A and AGLE100B confirm each other and agree to the decision to use the channel related information.

Then, in steps S721 to S729, the same processing as steps S407 to S415 described with reference to Fig. 14 is performed.

Further, the processing of step S713 may not be performed by both the AGLE 100A and the AGLE 100B, but may be performed by only one party. In this case, which of the AGLE 100A and the AGLE 100B is to be processed may be determined according to the processing load in each device, or may be randomly determined. Moreover, the processing system can also be interactively performed by AGLE100A and AGLE100B.

Also, a dedicated frequency channel can be secured to avoid interference problems near the junction 60. In this case, in step S713, if the influence of the primary system on the secondary system (for example, the interference level) is more than the positioning level, the utilization of the dedicated frequency channel is permitted.

-Other configuration examples of CRM

In the above example, the CRM system is configured in the AGLE 100. However, the arrangement of the CRM described in the third embodiment is not limited to this example. Hereinafter, a specific example will be described with reference to FIGS. 19 and 20.

Fig. 19 is an explanatory diagram for explaining another example of the configuration of the CRM. Referring to Fig. 19, similarly to Fig. 17, GLDB 50A and AGLE 100A, and GLDB 50B and AGLE 100B are illustrated. As shown in FIG. 19, the CRM 300 can also be implemented as a separate device from the GLDB 50 and AGLE 100 entities, and is connected to communicate with the GLDB 50 and the AGLE 100.

Such a CRM 300, for example, exchanges information with AGLE 100A and AGLE 100B (and GLDB 50A and GLDB 50B) to check whether there is a primary system in other countries that affects a country's secondary systems. Then, if such a primary system exists, the CRM300 will try to calculate the impact of the primary system on the secondary system (eg, interference level). If the impact is more than the target, the CRM 300 corrects and re-determines the available channel information.

Fig. 20 is an explanatory diagram for explaining still another example of the arrangement of the CRM. Referring to Fig. 20, similarly to Fig. 17, GLDB 50A and AGLE 100A, and GLDB 50B and AGLE 100B are illustrated. As shown in Figure 20, the CRM system can also be implemented as part of the GLDB 50.

Such a GLDB 50, which contains CRM as a part, is for example checked for the existence of a primary system of another country that affects a country's secondary system. Then, if such a primary system exists, the GLDB 50 will try to calculate the impact of the primary system on the secondary system (eg, interference level). If the impact is more than the target, the GLDB 50 corrects and re-determines the available channel information.

The third modification of the embodiment has been described above. According to the third modification of the present embodiment, interference from the primary system in the country can be suppressed or avoided not only with interference from the primary system in the country.

<5.4. Fourth Modification>

So far, the embodiment has been mainly described by the concept of a TV blank space. However, the technique described in the embodiment is not limited to the above example.

For example, in the discussion of the 5th generation (5G) wireless communication method after Release 4 of 3GPP, in order to improve the communication capacity, it is proposed to make the macro hive network and the small hive network overlap each other (NTT DOCOMO, INC., "Requirements," Candidate Solutions & Technology Roadmap for LTE Rel-12 Onward", 3GPP Workshop on Release 12 and onwards, Ljubljana, Slovenia, June 11-12, 2012). The technique described in this embodiment can also be applied to a case where interference may occur between such a macro hive network and a small hive network. That is, the wireless communication system of the above object may also be a wireless communication in a small cellular network partially or completely overlapping with the macro honeycomb network, and the interference frequency channel system may also be a frequency channel used in the macro-hive network.

Further, the technique according to the present embodiment can also be applied to the case of LSA which is premised on device sharing. Moreover, in the embodiment The technology can also be applied to a cellular network that may be interfered between a system used by MVNO (Mobile Virtual Network Operator) and/or MVNE (Mobile Virtual Network Enabler) and a system used by MNO (Mobile Network Operator). Case. Further, the technique described in the present embodiment can also be applied to a case in which the MBMS (Multimedia Broadcast Multicast Service) is applied. Specifically, for example, when the same signal is synchronously transmitted from a plurality of base stations by the MBSFN (MBMS Single Frequency Network) transmission method, the wireless communication in the (multiple) frequency channel can also be applied to the downlink. TDD configuration. At this time, the related processing of the allocation of the uplink channel can also be omitted.

In addition, as to which system or cellular network is to be regarded as the interference side, which system or the cellular network is considered to be interfered, it may be determined according to the priority of each communication link. Priority may be specified by QoS requirements or may be predefined.

<<6. Application examples>>

The technology described in the present disclosure can be applied to various products. For example, each of the AGLE 100 and the GLDB 50 can be implemented by any of a type of server such as a tower server, a rack server, or a blade server. Further, each of the AGLE 100 and the GLDB 50 may be a control module mounted on a server (for example, an integrated circuit module composed of one wafer or a card inserted into a slot of a blade server) Or a knife board).

Also, for example, the main WSD200 system can also be implemented as a giant Any type of eNB (evolved Node B) such as an eNB or a small eNB is set. The small eNB may also be an eNB that covers a cellular network smaller than the macro hive network, such as a pico eNB, a pico eNB, or a home (femto) eNB. Alternatively, the main WSD 200 can be implemented as another type of base station such as a NodeB or a BTS (Base Transceiver Station). The main WSD 200 system may also include a main body (also referred to as a base station device) that controls wireless communication, and one or more RRHs (Remote Radio Heads) that are disposed at a place separated from the main body. Further, the base station function can be temporarily or semi-permanently executed by various types of terminals described later, and the main WSD 200 can be operated.

Further, for example, the sub-WSD 300 can be implemented as a mobile terminal, a tablet PC (Personal Computer), a notebook PC, a portable game terminal, a portable/key type mobile router, or a mobile terminal such as a digital camera, or An in-vehicle terminal such as a driving navigation device. Further, the sub WSD 300 system can also be implemented as a terminal (also referred to as an MTC (Machine Type Communication) terminal) that performs M2M (Machine To Machine) communication. In addition, the sub WSD 300 may be a wireless communication module (for example, an integrated circuit module composed of one wafer) mounted on these terminals.

<6.1. Application examples of AGLE and GLDB>

Fig. 21 is a block diagram showing an example of a schematic configuration of a server 750 to which the technique described in the present disclosure is applicable. The server 750 includes a processor 751, a memory 752, a storage 753, a network interface 754, and a bus 756.

The processor 751 can be, for example, a CPU (Central Processing Unit) or a DSP (Digital Signal Processor), and controls various functions of the server 750. The memory 752 includes a RAM (Random Access Memory) and a ROM (Read Only Memory), and stores programs and data executed by the processor 751. The storage 753 may contain a memory medium such as a semiconductor memory or a hard disk.

The network interface 754 is the wired communication interface required to connect the server 750 to the wired communication network 755. The wired communication network 755 can be a core network such as EPC (Evolved Packet Core), or can be a PDN (Packet Data Network) such as the Internet.

The bus 756 connects the processor 751, the memory 752, the storage 753, and the network interface 754 to each other. The busbar 756 system may also include two upper busbars (eg, a high speed bus bar and a low speed bus bar) having different speeds.

In the server 750 shown in FIG. 21, the configuration selection unit 137 and the configuration application unit 139 described with reference to FIG. 9 can also be implemented in the processor 751. Further, the channel identification unit 132 and the selection candidate determination unit 133 described with reference to FIG. 9 may be implemented in the processor 751.

<6.2. Application example of main WSD> (First application example)

Fig. 22 is a block diagram showing a first example of a schematic configuration of an eNB to which the technique described in the present disclosure is applicable. eNB800 has more than one antenna 810, and a base station device 820. Each antenna 810 and base station device 820 are connected to each other via an RF cable.

Each of the antennas 810 has a single or complex antenna element (e.g., a plurality of antenna elements constituting a MIMO antenna) that is used to receive the wireless signals of the base station apparatus 820. The eNB 800 has a plurality of antennas 810 as shown in FIG. 22, and the complex antennas 810 may also correspond to, for example, a plurality of frequency bands used by the eNB 800, respectively. In addition, although FIG. 22 illustrates an example in which the eNB 800 has the complex antenna 810, the eNB 800 may have a single antenna 810.

The base station device 820 includes a controller 821, a memory 822, a network interface 823, and a wireless communication interface 825.

The controller 821 can be, for example, a CPU or a DSP, and causes various functions of the upper layer of the base station device 820 to operate. For example, the controller 821 generates a data packet from the data in the signal that has been processed by the wireless communication interface 825, and transmits the generated packet through the network interface 823. The controller 821 can also bundle the data from the complex baseband processor to generate a bundled packet, and transmit the generated bundled packet. Further, the controller 821 may have a function of performing Radio Resource Control, Radio Bearer Control, Mobility Management, Admission Control, or Scheduling. The logical function of control. Moreover, the control may be performed in cooperation with a neighboring eNB or a core network node. The memory 822 includes a RAM and a ROM, and memorizes a program to be executed by the controller 821, and various control data (for example, terminal clearing) Single, transmission power data and schedule data, etc.).

The network interface 823 is used to connect the base station device 820 to the communication interface required by the core network 824. The controller 821 can also communicate with the core network node or other eNB through the network interface 823. In this case, the eNB 800 and the core network node or other eNBs may also be connected to each other by a logical interface (for example, an S1 interface or an X2 interface). The network interface 823 can be a wired communication interface or can be a wireless communication interface for wireless backhaul. If the network interface 823 is a wireless communication interface, the network interface 823 can also use a frequency band higher than the frequency band used by the wireless communication interface 825 for wireless communication.

The wireless communication interface 825 supports any cellular communication method such as LTE (Long Term Evolution) or LTE-Advanced, and provides a wireless connection to the terminal located in the cellular network of the eNB 800 through the antenna 810. The wireless communication interface 825, typically, may include a baseband (BB) processor 826, an RF circuit 827, and the like. The BB processor 826 is, for example, capable of performing encoding/decoding, modulation/demodulation, and multiplexing/reverse multiplexing, and performs various layers (for example, L1, MAC (Medium Access Control), RLC (Radio Link Control), and PDCP ( Packet Data Convergence Protocol)) A variety of signal processing. The BB processor 826 can also replace the controller 821 with some or all of the above logic functions. The BB processor 826 can also be a module containing: a memory for controlling the communication control program, a processor for executing the program, and a related circuit. The function of the BB processor 826 can also be changed by upgrading the program. Moreover, the upper module may also be a card or a blade that is inserted into the slot of the base station device 820, or may be A wafer placed on the board or the blade. On the other hand, the RF circuit 827 may also include a mixer, a filter, an amplifier, etc., and transmit the wireless signal through the antenna 810.

The wireless communication interface 825 includes a complex BB processor 826 as shown in FIG. 22, and the complex BB processor 826 corresponds to, for example, a plurality of frequency bands used by the eNB 800. Further, the wireless communication interface 825 includes a plurality of RF circuits 827 as shown in FIG. 22, and the plurality of RF circuits 827 may also correspond to, for example, a plurality of antenna elements. In addition, although the wireless communication interface 825 is illustrated in FIG. 22 as an example including a plurality of BB processors 826 and a plurality of RF circuits 827, the wireless communication interface 825 may also include a single BB processor 826 or a single RF circuit 827.

(Second application example)

Fig. 23 is a block diagram showing a second example of a schematic configuration of an eNB to which the technique described in the present disclosure is applicable. The eNB 830 has one or more antennas 840, a base station device 850, and an RRH 860. Each antenna 840 and RRH 860 are connected to each other through an RF cable. Further, the base station device 850 and the RRH 860 can be connected to each other by a high-speed line such as an optical fiber.

Each of the antennas 840 has a single or complex antenna element (e.g., a plurality of antenna elements that form a MIMO antenna) that is used to receive the radio signals of the RRH 860. The eNB 830 has a complex antenna 840 as shown in FIG. 23, and the complex antenna 840 may also correspond to, for example, a complex frequency band used by the eNB 830, respectively. In addition, although FIG. 23 illustrates an example in which the eNB 830 has the complex antenna 840, the eNB 830 may also have Single antenna 840.

The base station device 850 includes a controller 851, a memory 852, a network interface 853, a wireless communication interface 855, and a connection interface 857. The controller 851, the memory 852, and the network interface 853 are the same as the controller 821, the memory 822, and the network interface 823 described with reference to FIG.

The wireless communication interface 855 supports any cellular communication mode such as LTE or LTE-Advanced, and provides a wireless connection to terminals located in the section corresponding to the RRH 860 through the RRH 860 and the antenna 840. The wireless communication interface 855, typically, may include a BB processor 856 or the like. The BB processor 856 is the same as the BB processor 826 described with reference to FIG. 22 except that it is connected to the RF circuit 864 of the RRH 860 through the connection interface 857. The wireless communication interface 855 includes a plurality of BB processors 856 as shown in FIG. 23, and the complex BB processors 856 correspond to, for example, the complex frequency bands used by the eNB 830, respectively. In addition, although the wireless communication interface 855 is illustrated in FIG. 23 as an example including a plurality of BB processors 856, the wireless communication interface 855 may also include a single BB processor 856.

The connection interface 857 is the interface required to connect the base station device 850 (wireless communication interface 855) with the RRH 860. The connection interface 857 may also be a communication module required to connect the base station device 850 (wireless communication interface 855) with the upper high speed line of the RRH860.

Moreover, the RRH860 is provided with a connection interface 861 and a wireless communication interface 863.

Connection interface 861 is used to connect RRH860 (wireless Interface 863) and the interface required by the base station device 850. The connection interface 861 can also be used for the communication module required for high-speed line communication.

The wireless communication interface 863 transmits wireless signals through the antenna 840. The wireless communication interface 863, typically, may include an RF circuit 864 or the like. The RF circuit 864 may also include a mixer, a filter, an amplifier, etc., and transmit the wireless signal through the antenna 840. The wireless communication interface 863 includes a plurality of RF circuits 864 as shown in FIG. 23, and the complex RF circuits 864 may also correspond to, for example, a plurality of antenna elements. In addition, although the wireless communication interface 863 is shown as an example including the complex RF circuit 864 in FIG. 23, the wireless communication interface 863 may also include a single RF circuit 864.

The eNB 800 and the eNB 830 shown in FIG. 22 and FIG. 23 can also be implemented in the wireless communication interface 825 and the wireless communication interface 855 and/ Or wireless communication interface 863. Moreover, at least a portion of these functions can also be implemented in controller 821 and controller 851.

<6.3. Application example of sub WSD> (First application example)

Fig. 24 is a block diagram showing an example of a schematic configuration of a smartphone 900 to which the technology described in the present disclosure is applicable. The smart phone 900 includes a processor 901, a memory 902, a storage 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, and a wireless communication interface 912. More than one An antenna switch 915, one or more antennas 916, a bus bar 917, a battery 918, and an auxiliary controller 919.

The processor 901 can be, for example, a CPU or a SoC (System on Chip), and controls the functions of the application layer and other layers of the smart phone 900. The memory 902 includes a RAM and a ROM, and stores programs and data executed by the processor 901. The storage 903 may contain a memory medium such as a semiconductor memory or a hard disk. The external connection interface 904 may also be an interface required to connect an external device such as a memory card or a USB (Universal Serial Bus) device to the smart phone 900.

The camera 906 has an imaging element such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor), and generates an imaging image. The sensor 907 can include, for example, a sensor group of a positioning sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor. The microphone 908 converts the sound input to the smart phone 900 into an audio signal. The input device 909 includes, for example, a touch sensor, a key pad, a keyboard, a button or a switch for detecting a touch on the screen of the display device 910, and accepts an operation or information input from a user. The display device 910 has a screen such as a liquid crystal display (LCD) or an excitation light diode (OLED) display, and displays an output image of the smart phone 900. The speaker 911 converts the sound signal output from the smartphone 900 into sound.

The wireless communication interface 912 supports any cellular communication method such as LTE or LTE-Advanced to perform wireless communication. Wireless communication interface 912, which typically includes BB processor 913 and RF power Road 914 and so on. The BB processor 913 is, for example, capable of performing encoding/decoding, modulation/demodulation, and multiplexing/reverse multiplexing, and performs various signal processing required for wireless communication. On the other hand, the RF circuit 914 may include a mixer, a filter, an amplifier, and the like, and transmits a wireless signal through the antenna 916. The wireless communication interface 912 is typically a single-chip module that is condensed by the BB processor 913 and the RF circuit 914. The wireless communication interface 912 can also include a plurality of BB processors 913 and a plurality of RF circuits 914 as shown in FIG. In addition, although the wireless communication interface 912 is illustrated in FIG. 24 as an example including a plurality of BB processors 913 and a plurality of RF circuits 914, the wireless communication interface 912 may also include a single BB processor 913 or a single RF circuit 914.

In addition, the wireless communication interface 912 can support short-range wireless communication methods, proximity wireless communication methods, or wireless LAN (Local Area Network) methods, etc., in addition to the cellular communication mode. It may include a BB processor 913 and an RF circuit 914 for each wireless communication method.

Each of the antenna switches 915 switches the connection of the antenna 916 between a plurality of circuits (e.g., circuits used in different wireless communication methods) included in the wireless communication interface 912.

Each of the antennas 916 has a single or complex antenna element (e.g., a plurality of antenna elements that form a MIMO antenna) that is used to receive the wireless signals of the wireless communication interface 912. The smart phone 900 may have a plurality of antennas 916 as shown in FIG. 24, and FIG. 24 illustrates an example in which the smart phone 900 has a plurality of antennas 916, but The smart phone 900 can also have a single antenna 916.

Even the smart phone 900 can be equipped with an antenna 916 having a wireless communication method. In this case, the antenna switch 915 can be omitted from the configuration of the smartphone 900.

The bus 917 is a processor 901, a memory 902, a storage 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, a wireless communication interface 912, and The auxiliary controllers 919 are connected to each other. The battery 918 supplies electric power to each block of the smartphone 900 shown in Fig. 24 through a power supply line shown by a broken line in the figure. The auxiliary controller 919, for example, in the sleep mode, operates the minimum necessary function of the smartphone 900.

In the smart phone 900 shown in FIG. 24, the configuration identification unit 343 and the communication control unit 345 described with reference to FIG. 13 can also be implemented in the wireless communication interface 912. Moreover, at least a portion of these functions may also be implemented in processor 901 or auxiliary controller 919.

(Second application example)

Fig. 25 is a block diagram showing an example of a schematic configuration of a driving navigation device 920 to which the technology described in the present disclosure is applied. The driving navigation device 920 includes a processor 921, a memory 922, a GPS (Global Positioning System) module 924, a sensor 925, a data interface 926, a content player 927, a memory medium interface 928, an input device 929, and a display device. 930, speaker 931, wireless communication interface 933, more than one antenna open 936, one or more antennas 937 and a battery 938 are turned off.

The processor 921 can be, for example, a CPU or SoC, controlling the navigation functions and other functions of the driving navigation device 920. The memory 922 includes a RAM and a ROM, and stores programs and data executed by the processor 921.

The GPS module 924 uses the GPS signals received from the GPS satellites to determine the position (eg, latitude, longitude, and altitude) of the driving navigation device 920. The sensor 925 can include, for example, a sensor group of a gyro sensor, a geomagnetic sensor, and a barometric sensor. The data interface 926 is connected to the in-vehicle network 941 via a terminal (not shown), for example, and acquires data generated by the vehicle side such as vehicle speed data.

The content player 927 reproduces the content stored in a memory medium (for example, a CD or a DVD) to be inserted into the memory medium interface 928. The input device 929 includes, for example, a touch sensor, a button or a switch that detects a touch on the screen of the display device 930, and accepts an operation or information input from a user. The display device 930 has a screen such as an LCD or an OLED display, and displays an image of the navigation function or the content being reproduced. The speaker 931 outputs the sound of the navigation function or the content to be reproduced.

The wireless communication interface 933 supports any cellular communication method such as LTE or LTE-Advanced to perform wireless communication. The wireless communication interface 933, typically, may include a BB processor 934, an RF circuit 935, and the like. The BB processor 934 is, for example, capable of performing encoding/decoding, modulation/demodulation, and multiplexing/reverse multiplexing, and various signals required for performing wireless communication. deal with. On the other hand, the RF circuit 935 may also include a mixer, a filter, an amplifier, etc., and transmit the wireless signal through the antenna 937. The wireless communication interface 933 is typically a single-chip module that is condensed by the BB processor 934 and the RF circuit 935. The wireless communication interface 933 may also include a plurality of BB processors 934 and a plurality of RF circuits 935 as shown in FIG. In addition, although the wireless communication interface 933 is illustrated in FIG. 25 as an example including a plurality of BB processors 934 and a plurality of RF circuits 935, the wireless communication interface 933 may also include a single BB processor 934 or a single RF circuit 935.

In addition, the wireless communication interface 933 can also support other types of wireless communication methods such as short-range wireless communication, proximity wireless communication, or wireless LAN, in addition to the cellular communication mode. In this case, each of the wireless communication interfaces may be included. BB processor 934 and RF circuit 935 of wireless communication mode.

Each of the antenna switches 936 switches the connection of the antenna 937 between a plurality of circuits (e.g., circuits used in different wireless communication methods) included in the wireless communication interface 933.

Each of the antennas 937 has a single or multiple antenna elements (e.g., a plurality of antenna elements that form a MIMO antenna) that are used to receive wireless signals from the wireless communication interface 933. The driving navigation device 920 may have a plurality of antennas 937 as shown in FIG. 25. Further, although FIG. 25 illustrates an example in which the driving navigation device 920 has a plurality of antennas 937, the driving navigation device 920 may have a single antenna 937. .

Even the driving navigation device 920 can be equipped with each Antenna 937 for wireless communication. In this case, the antenna switch 936 can be omitted from the configuration of the driving navigation device 920.

The battery 938 supplies electric power to each block of the driving navigation device 920 shown in Fig. 25 through a power supply line shown by a broken line in the figure. Further, the battery 938 stores electric power supplied from the vehicle side.

The configuration identification unit 343 and the communication control unit 345 described with reference to FIG. 13 in the driving navigation device 920 shown in FIG. 25 can also be implemented in the wireless communication interface 933. Moreover, at least a portion of these functions can also be implemented in the processor 921.

Further, the technology described in the present disclosure may be implemented as an in-vehicle system (or vehicle) 940 including one or more blocks of the above-described driving navigation device 920 and an in-vehicle network 941 and a vehicle-side module 942. The vehicle side module 942 generates vehicle side data such as vehicle speed, engine speed, or failure information, and outputs the generated data to the in-vehicle network 941.

<<7. Summary>>

The communication device and the processes described in the present disclosure have been described so far using Figs. 1 to 20 . According to the embodiment described in the present disclosure, among the plurality of candidates of the TDD configuration, the TDD configuration required for wireless communication is selected. Then, the selected TDD configuration will be applied to wireless communication. Further, the above-mentioned plural candidate system includes at least one of a TDD configuration dedicated to the downlink and a TDD configuration dedicated to the uplink.

In this way, even if there are transmitters and receivers using the same or similar frequency bands, they can still be compared through the receiver. Ideal for wireless communication.

Further, for example, the above-mentioned complex candidate system includes a downlink-dedicated TDD configuration.

Thereby, even the available channels in the vicinity of the primary channel can suppress interference from the primary system. That is, even if the available channel near the primary channel can suppress the decrease in SINR.

Also, for example, the above-mentioned complex candidate system includes a TDD configuration dedicated to the uplink.

Thereby, even if the frequency bandwidth of the secondary channel far away from the primary channel is narrow (or when the number of secondary channels is small), most of the wireless resources for uplinking can be secured. Therefore, the throughput of the uplink can be improved.

Then, for example, the above-mentioned complex candidate system includes both the downlink dedicated TDD configuration and the uplink dedicated TDD configuration.

In this case, even if TDD is used as the duplex wireless communication system, wireless communication can be performed in the same manner and/or in part of the frequency channel as in the case of using the FDD as the duplex mode. As a result, interference from the primary channel can be suppressed, and the throughput of the uplink can be improved.

Further, for example, for each of the frequency channels included in the two or more frequency channels, one or more of the plurality of candidates for the TDD configuration may be selected for the wireless communication in each frequency channel. The candidate (which can also be selected as an alternate) will be decided. In addition, one or more optional candidates are recorded based on the interference signal. The information on the interference frequency channel and the distance in the frequency direction of each frequency channel (ie, distance information) is determined.

Thereby, the throughput can be improved while suppressing the influence of interference.

Further, for example, the mind of one or more selectable candidate, based on a note if the note and channel frequency interference distance of each frequency channel is less than the distance D ₁ when compared to the TDD downlink dedicated configuration.

Thereby, among the available channels close to the primary channel (interference frequency channel), only the TDD configuration of the downlink subframe (the TDD configuration without the uplink subframe) is selected and applied. As a result, in the available channel, the uplink wireless communication system is not performed, and only the downlink wireless communication is performed. Therefore, interference in the available channel should be suppressed. That is, the decrease in the SINR in the available channel is suppressed.

Further, for example, one or more optional candidates are listed above, and if the distance between the interference frequency channel and each of the frequency channels is greater than the distance D ₂ , the uplink-specific TDD configuration is included.

Thereby, among the available channels far away from the primary channel (interference frequency channel), only the TDD configuration of the uplink subframe becomes optional. Therefore, with the choice of such a TDD configuration, even if the bandwidth of the available channel (or the sum of the bandwidths of all available channels) is narrow, the throughput of the uplink in the secondary system can be improved. the amount.

Further, for example, one or more optional candidates are listed above, and the frequency of the interference frequency channel and the frequency direction of each frequency channel are recorded. When the distance is large, the TDD configuration with a large number of uplink frames is included.

Thereby, the farther the available channel is from the primary channel (interference frequency channel), the larger the number of uplink subframes can be selected for the TDD configuration. On the other hand, the closer the available channel is to the primary channel (interference frequency channel), then only the smaller number of TDD configurations of the uplink subframe can be selected in order to be available for the channel. Therefore, with the choice of such a TDD configuration, interference in the available channels can be suppressed. That is, the decrease in the SINR in the available channel is suppressed.

Although the preferred embodiment of the present disclosure has been described above with reference to the accompanying drawings, the present disclosure is of course not limited to the examples. As long as it is a practitioner, various changes or modifications are naturally conceivable within the scope of the patent application, and these are of course also within the technical scope of the disclosure, which must be understood.

Further, the processing steps in the communication control processing of the present specification are not necessarily performed in time series in accordance with the order described in the flowchart. For example, the processing steps in the communication control processing may be executed in a different order from that described in the flowchart manner, or may be performed in parallel.

Moreover, it is also possible to make a hardware such as a CPU, a ROM, and a RAM built in a communication control device (for example, GLDB, AGLE, and main WSD) and a communication device (for example, a secondary WSD) to function as a communication control device and a communication device with the above. Each of the computer programs required to function as equivalent functions. Also, mention Memory media that should be remembered as a computer program.

Further, the following configurations are also within the technical scope of the present disclosure.

(1) A communication control device for controlling a wireless communication communication device according to a time division duplex (TDD) method, comprising: a selection unit, which is a sub-frame of a radio frame having a plurality of sub-frames The frame unit is used to indicate the chain direction configuration of the link direction, and the link direction configuration required for the wireless communication is selected; and the applicable part is configured to configure the selected front link direction. In the pre-recording wireless communication; the pre-complexing candidate system includes: at least one of the chain-specific chain direction configuration and the chain-specific chain direction configuration.

(2) The communication control device according to the above (1), wherein the pre-recording plural candidate system includes: a link direction configuration dedicated to the lower chain.

(3) The communication control device according to (1) or (2) above, wherein the pre-complexing candidate system includes: a link direction configuration dedicated to the winding up.

(4) The communication control device according to the above (3), wherein the link direction configuration for the pre-log-on chain includes: not performing part or all of the first subframe in the preceding multi-frame Link direction group state.

(5) The communication control device according to any one of the items (1) to (4), wherein the pre-recording selection unit is configured to perform wireless communication in two or more frequency channels. For each frequency channel included in more than two frequency channels, select the link direction configuration required for the wireless communication in each frequency channel in the pre-recording plural candidate; the pre-recording applicable part will be for each frequency of the pre-recording The configuration of the pre-linked link direction selected by the channel is suitable for the wireless communication in each frequency channel.

(6) The communication control device according to the above (5), wherein the pre-recording selection unit selects the wireless communication in each of the frequency channels from among the one or more selectable candidates of the plurality of candidates The required link direction configuration; one or more optional candidates are pre-determined based on the information about the interference frequency channel to which the interference signal is transmitted and the distance of the frequency direction of each frequency channel.

(7) The communication control device according to the above (6), wherein one or more of the candidate candidates are selected based on information related to the quality of service required for the wireless communication.

(8) The communication control device according to (6) or (7) above, wherein one or more of the candidate candidates are selected as follows: if the pre-interference frequency channel and the pre-recorded distance of each frequency channel are less than the first distance, It is configured for the link direction of the previous chain.

(9) The communication control device according to any one of (6) to (8) above, wherein one or more of the candidate candidates are selected as the pre-interference frequency channel and the pre-recorded distance of each frequency channel. When it is greater than the second distance, it is configured with the link direction dedicated to the previous winding.

(10) The communication control device according to any one of (6) to (9), wherein one or more of the candidate candidates are selected as the pre-interference frequency channel and the pre-recorded distance of each frequency channel. When it is large, it has a larger number of link direction configurations with a chained sub-frame.

(11) The communication control device according to any one of (5) to (10), wherein the two or more frequency channels include: a first frequency that is closer to an interference frequency channel to which the interference signal is transmitted. The channel and the second frequency channel farther away from the pre-interference frequency channel; the pre-selection unit is configured as the link direction required for the wireless communication in the first frequency channel, and the number of the selected sub-frames is the first The first link direction configuration of the number is configured as the link direction required for wireless communication in the second frequency channel, and the number of the selected downlink frames is smaller than The second link direction configuration of the second number of the first number is described.

(12) The communication control device according to any one of (5) to (11), wherein the pre-recording selection unit is an interference frequency channel to which the interference signal is transmitted and a frequency direction of each of the frequency channels. When the distance is less than the third distance, it is configured as the link direction required for the wireless communication in each frequency channel, and is configured to select the link direction dedicated to the lower chain.

(13) The communication control device according to any one of (1) to (12) above, wherein the pre-recorded wireless communication is performed in one or more frequency channels; the first one or more frequency channels are included : A frequency channel that is farther away from the fourth distance in the frequency direction from the interference frequency channel to which the interference signal is transmitted.

(14) The communication control device according to the above (13), wherein the pre-recording selection unit configures the number of the uplink sub-frames larger than the fixed number of link directions when the pre-recorded wireless communication is a predetermined type of wireless communication It is selected as the configuration of the link direction required to record the frequency channel from the pre-recorded interference frequency channel before the fourth distance or more.

(15) The communication control device according to the above (14), wherein the wireless communication of the predetermined type is a Machine to Machine communication.

(16) The communication control device according to any one of (6) to (15), wherein the wireless communication system is a wireless system of a secondary system that uses the frequency channel required for the primary system for secondary use. Communication; The pre-interference frequency channel is the frequency channel used in other wireless communication systems different from the pre-recorded secondary system.

(17) The communication control device according to any one of (6) to (15), wherein the wireless communication system is a wireless communication in a small cellular network that overlaps with the whole or a part of the macro honeycomb network; The interference frequency channel is the frequency channel used in the pre-recorded macro hive network.

(18) A communication control method for controlling a wireless communication communication control method according to a time division duplex (TDD) method, which comprises: in a subframe unit in a wireless frame having a plurality of subframes Among the plurality of candidates for the link direction configuration indicating the direction of the link, the step of configuring the link direction required for the wireless communication is selected; and the selected front link direction is configured, which is suitable for the step of pre-recording wireless communication. The pre-complexing candidate system includes: the link direction configuration dedicated to the lower chain, and At least one of the chain-specific link direction configurations.

(19) A communication control device comprising: an identification unit that recognizes a frequency channel that is performed in accordance with a time-division duplex (TDD) wireless communication; and a determination unit that is configured to have two or more wireless communication When the frequency channel is performed, the frequency of the interference frequency channel transmitted according to the interference signal and the distance of the frequency direction of each frequency channel are respectively determined for each frequency channel included in the frequency channel of the two or more frequency channels. Information, in the multiple candidates of the configuration of the link direction indicating the direction of the link in the subframe frame of the radio frame containing the plurality of sub-frames, it is determined that the wireless communication in each frequency channel is applied for the pre-recording. One or more candidates can be selected; the pre-complexing candidate system includes at least one of a chain-specific chain direction configuration and a chain-specific chain direction configuration.

(20) A communication device for controlling a wireless communication device according to a time division duplex (TDD) method, comprising: an identification unit, which is a sub frame of a radio frame having a plurality of sub frames The unit is configured to indicate the link direction configuration of the link direction of the link direction, and the configuration of the link direction applicable to the pre-recorded wireless communication is recognized; and the communication control unit is configured according to the link direction before being recognized. To control the pre-recording wireless communication; the pre-complexing candidate system includes: at least one of the chain-specific chain direction configuration and the chain-specific chain direction configuration.

Claims (16)

A communication control device is a communication control device for controlling wireless communication according to a time division duplex (TDD) method, and has a selection unit, which is a sub-frame unit in a wireless frame containing a plurality of sub-frames Among the plurality of candidates for the link direction configuration of the link direction, the link direction configuration required for the pre-recorded wireless communication is selected; and the applicable part is configured to configure the selected front link direction for the pre-recording wireless Communication; the pre-complexing candidate system includes: at least one of the chain-specific chain direction configuration and the chain-specific chain direction configuration; the pre-recording selection unit is that the pre-recording wireless communication is on more than two frequency channels. When the middle is performed, the link direction configuration required for the wireless communication in each frequency channel among the pre-recording plural candidates is selected for each of the frequency channels included in the two or more frequency channels; The above frequency channel includes: a first frequency channel that is closer to the interference frequency channel to which the interference signal is transmitted, and a second frequency channel that is farther away from the previous interference frequency channel; The selection is the configuration of the link direction required for the wireless communication in the first frequency channel, and is the configuration of the first link direction in which the number of the lower sub-frames is the first number, as the pre-recorded second frequency channel. The configuration of the link direction required for wireless communication is to select the second link direction configuration in which the number of downlink frames is less than the second number of the first number of the first note; the pre-applied section is for each of the pre-records. Frequency channel selected before The link direction configuration is suitable for wireless communication in each frequency channel. The communication control device according to claim 1, wherein the pre-recording plural candidate system includes: a link direction configuration dedicated to the lower chain. The communication control device according to claim 1, wherein the pre-completion candidate system includes: a link direction configuration dedicated to the pre-chaining. The communication control device according to claim 3, wherein the link direction configuration for the pre-log-on chain includes: not performing uplink communication in part or all of the first subframe of the pre-recorded sub-frame Link direction configuration. The communication control device according to claim 1, wherein the pre-recording selection unit selects a chain required for wireless communication in each of the frequency channels from among one or more of the candidate candidates of the plurality of candidates. The configuration of the junction direction; the selection of one or more optional candidates is determined based on the information about the interference frequency channel to which the interference signal is transmitted and the distance of the frequency direction of each frequency channel. The communication control device according to claim 5, wherein one or more of the candidate candidates are selected based on the information related to the quality of service requested in the wireless communication. The communication control device according to claim 5, wherein one or more of the candidate candidates are selected as follows: if the pre-interference frequency channel and the pre-recorded distance of each frequency channel are less than the first distance, Dedicated chain direction configuration. The communication control device according to claim 5, wherein the one or more optional candidates are preceded by the pre-recording chain if the pre-interference frequency channel and the pre-recording distance of each frequency channel are greater than the second distance. Dedicated chain direction configuration. The communication control device according to claim 5, wherein one or more of the candidate candidates are selected, wherein if the pre-interference frequency channel and the pre-recording distance of each frequency channel are large, the uplink sub-frame is included. A large number of link direction configurations. The communication control device according to claim 1, wherein the pre-recording selection unit is configured to perform the distance between the interference frequency channel to which the interference signal is transmitted and the frequency direction of each of the previous frequency channels is less than the third distance. The configuration of the link direction required for wireless communication in the frequency channel is to select the link direction configuration dedicated to the downlink. The communication control device according to claim 1, wherein the pre-recorded wireless communication is performed in one or more frequency channels; and the preceding one or more frequency channels include: from the interference frequency channel to which the interference signal is transmitted. A frequency channel that is farther than the fourth distance in the frequency direction. The communication control device according to claim 11, wherein the pre-recording selection unit configures the number of the uplink sub-frames to be larger than the fixed number of link directions when the pre-recorded wireless communication is a predetermined type of wireless communication. The interference frequency channel is selected from the configuration of the link direction required for the frequency channel before the fourth distance or more. The communication control device as recited in claim 12, wherein the pre-record The specified type of wireless communication is Machine to Machine communication. The communication control device according to claim 5, wherein the pre-recorded wireless communication system is a wireless communication of a secondary system that uses the frequency channel required by the primary system for secondary use; the pre-recorded interference frequency channel is, and the previous record The frequency channel used in other wireless communication systems differing from the level system. The communication control device according to claim 5, wherein the pre-recorded wireless communication system is a wireless communication in a small cellular network overlapping part or the whole of the macro honeycomb network; the pre-interference frequency channel is the pre-recorded macro hive network. The frequency channel used in the middle. A communication control method is a communication control method for controlling wireless communication according to a time division duplex (TDD) method, which comprises: expressing a link in a subframe unit in a wireless frame having a plurality of subframes Among the multiple candidates of the direction of the link direction configuration, the step of configuring the link direction required for the wireless communication is selected; and the selected front link direction is configured, which is applicable to the step of pre-recording wireless communication; The candidate system includes: at least one of the chain-specific chain direction configuration and the chain-specific link direction configuration; the pre-selection step includes: if the pre-recorded wireless communication is in more than 2 frequency channels When it is carried out, it is for the frequency of 2 or more frequencies. Each frequency channel included in the channel selects the step of configuring the link direction required for wireless communication in each frequency channel in the pre-recording plural candidate; the frequency channel of the previous two or more channels contains: closer to the interference signal The first frequency channel of the transmitted interference frequency channel and the second frequency channel farther away from the previous interference frequency channel; the pre-selection step includes: configuring the link direction required for wireless communication in the first frequency channel , is to configure the first link direction configuration in which the number of downlink frames is the first number, as the link direction configuration required for wireless communication in the second frequency channel, the number of the selected downlink frames is The step of configuring the second link direction that is smaller than the second number of the first number of the first note; the pre-recorded step includes: configuring the pre-link chain direction selected for each of the frequency channels, for each frequency The steps for wireless communication in the channel.